After trying 8 different Windows Phone 7/7.5 devices in the last year and a half, I have decided to compile my opinions on each and rank them from best to worst.
Keep in mind that these are just my opinions on devices I've owned based on the experiences I've had with each...yours may be different.
1. Samsung Focus S
Pros
Best screen available for a WP device
Excellent speaker and call quality
Thin, light, fast
Super easy to interop unlock and debrand
Has all available hardware that WP7 currently supports (apart from LTE)
Very fast HSPA+ connection (Faster than Lumia 900 and Titan's HSPA+)
Cons
Battery doesn't last as long as other WP7 devices
Headphones audio quality and volume isn't as good as some other devices
2. HTC Titan
Pros
Largest and good quality screen
Very good camera exclusive features and sound enhancements
Excellent build and speaker
Great battery life
Cons
Can't be dev/interop unlocked
Mediocre call quality/reception
Unlocked AT&T devices can't enable internet sharing on other carriers
3. Samsung Focus
Pros
Good OLED screen (pentile though)
Very easy to unlock and enable internet sharing for any carrier
Has custom ROMs
Great speaker and call quality
micro SD card support
Cons
Build quality is poor and feels cheap
Gen 1 device that is missing some features newer WP7.5 devices have
4. LG Optimus 7
Pros
Very solid and sturdy build
Very stable. Least bugs experienced.
Easy to dev unlock
Internet sharing update possible for most if device is flashed to a different region
Cons
Lackluster screen and speaker
Gen 1 device that is missing some features newer WP7.5 devices have
5. Nokia Lumia 710
Pros
Solid build
Exclusive Nokia apps make a difference
Call quality and reception are great
Custom ROM may be possible
Supports Tmobile AWS frequency and AT&T 4G
Cons
Questionable battery life
Missing some hardware features
Internet sharing not yet available
6. Nokia Lumia 900
Pros
Gorgeous hardware and design
Gorgeous screen
Exclusive Nokia apps make a difference
Call quality and reception are great
LTE support
Unique design
Cons
Buggy with software issues even after the patch update
Camera is terrible
Can't be dev/interop unlocked
7. LG Quantum
Pros
Has a hardware keyboard
Easy to dev unlock
Cons
Screen and speaker are poor
Unappealing design and hardware
Heavy
Gen 1 device that is missing some features newer WP7.5 devices have
8. HTC HD7
Pros
Custom ROMs
Easily unlockable
Cons
Poor screen
Poor build quality
Poor battery life
Gen 1 device that is missing some features newer WP7.5 devices have
If you are in the market for a Windows Phone 7.5 device and want the best device available, I would recommend the Samsung Focus S based on my experiences with multiple devices and hardware vendors.
I am aware that there are some interesting devices I've not yet used such as Dell Venue Pro, Titan II...and even the Fujitsu 32GB waterproof device, which may be a solid purchase as well.
Keep in mind that these are just my opinions on devices I've owned based on the experiences I've had with each...yours may be different.
1. Samsung Focus S
Pros
Best screen available for a WP device
Excellent speaker and call quality
Thin, light, fast
Super easy to interop unlock and debrand
Has all available hardware that WP7 currently supports (apart from LTE)
Very fast HSPA+ connection (Faster than Lumia 900 and Titan's HSPA+)
Cons
Battery doesn't last as long as other WP7 devices
Headphones audio quality and volume isn't as good as some other devices
2. HTC Titan
Pros
Largest and good quality screen
Very good camera exclusive features and sound enhancements
Excellent build and speaker
Great battery life
Cons
Can't be dev/interop unlocked
Mediocre call quality/reception
Unlocked AT&T devices can't enable internet sharing on other carriers
3. Samsung Focus
Pros
Good OLED screen (pentile though)
Very easy to unlock and enable internet sharing for any carrier
Has custom ROMs
Great speaker and call quality
micro SD card support
Cons
Build quality is poor and feels cheap
Gen 1 device that is missing some features newer WP7.5 devices have
4. LG Optimus 7
Pros
Very solid and sturdy build
Very stable. Least bugs experienced.
Easy to dev unlock
Internet sharing update possible for most if device is flashed to a different region
Cons
Lackluster screen and speaker
Gen 1 device that is missing some features newer WP7.5 devices have
5. Nokia Lumia 710
Pros
Solid build
Exclusive Nokia apps make a difference
Call quality and reception are great
Custom ROM may be possible
Supports Tmobile AWS frequency and AT&T 4G
Cons
Questionable battery life
Missing some hardware features
Internet sharing not yet available
6. Nokia Lumia 900
Pros
Gorgeous hardware and design
Gorgeous screen
Exclusive Nokia apps make a difference
Call quality and reception are great
LTE support
Unique design
Cons
Buggy with software issues even after the patch update
Camera is terrible
Can't be dev/interop unlocked
7. LG Quantum
Pros
Has a hardware keyboard
Easy to dev unlock
Cons
Screen and speaker are poor
Unappealing design and hardware
Heavy
Gen 1 device that is missing some features newer WP7.5 devices have
8. HTC HD7
Pros
Custom ROMs
Easily unlockable
Cons
Poor screen
Poor build quality
Poor battery life
Gen 1 device that is missing some features newer WP7.5 devices have
If you are in the market for a Windows Phone 7.5 device and want the best device available, I would recommend the Samsung Focus S based on my experiences with multiple devices and hardware vendors.
I am aware that there are some interesting devices I've not yet used such as Dell Venue Pro, Titan II...and even the Fujitsu 32GB waterproof device, which may be a solid purchase as well.