Great question: I had planned on posing a similar one myself. I wanted the HD2 a the time of the device announcement. I had a Blackstone (HD) which is a good phone, but IMO, the HD2 knocks its socks off.
I bought the Euro model (I'm a Yank, eh), having it for a mere 4 months and I nearly nearly took got the Sprint EVO. I was hesitant on going the Android route - even after hours of research I was uncomfortable with the platform, comparable services and applications. Sure, tons of free apps, but I wasn't convinced most of them would give me what I wanted.
In March I bought a used T-Mo(USA) phone for a pittance, selling my phone for another pittance, getting 3G in the bargain.
I've been a ROM flashing groupie, so when the Android builds started coming around, I jumped on the gravy-train.
Min-Mo is still my fall back, but I am finding all my needs are met with Android except BT headset for calls.....that's not a major factor unless I start travelling again.
Guess I got carried away, but in a convoluted way, I think I addressed the query.