I'm really happy with my G2. Coming from a Galaxy S4, the battery life is stellar, the stock-based roms are awesome and I must say I don't regret the "stock" CM/AOSP experience with this phone.
For camera, stock is just OK but with the available mods it becomes very good. Granted, it's not the best one can find but it's definitely great for a point-and-shoot use.
Screen wise, I've never been much bothered with the sun so far. My experience is same or better than with the SGS4.
Performance overall is very good and I hardly find any activity where I'm dissatisfied with it. Often the lags and stutters are more caused by the app as I had experienced the same with my S4.
Buttons placement is actually good when you need to adjust during a call. Otherwise it may not be the most intuitive but you get just used to it and it becomes natural.
Knock on feature is awesome. Can't wait for knock code (d801 here...)
Call quality is very good, no complains on that front.
Speaker quality, well for Skyping it's good and loud enough, and I don't understand people listening to music through their phone speakers anyway. When it's in public I want to slap them and in private you gotta have crappy hears to listen to music on ANY phone that way anyway. When you buy a high-end, high-dollars phone you get a dock or BT speakers.
I certainly don't regret the switch!
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