This my take on the whole BlackBerry thing. It's all about comparison to form an opinion. I just recently had the Storm, and I went through 3 of them (yes 3) of them to get the HTC Eris/Desire.
What I liked most about my Storm, was of course the push email, (which is what RIM is mainly known for)screen size and ruggedness. I was able to get my emails on the fly and view them at a very nice resolution. However what I HATED, was just that the phone could not handle rich media content. This is because RIM went with Java, which is a good stable (for the most part) platform. However, it is a HUGE crutch if you are looking for a user friendly, media rich phone/platform. Might as well hang it up with the BlackBerry. A majority of rims market now comprises of groupies, ppl who have NO clue why BlackBerry became popular. It's no longer corporate entities. Even with the 5.0 upgrade, it would not accept themes from 4.7, games were scarce and quite frankly SUCKED, app world was practically well dry, and it was a PAIN to convert videos. Not only that, everything you downloaded went STRAIGHT to the device memory, which was about 25 megs after adding core update 5. No option to install on memory card at all.
I have had windows mobile phones, all HTC with the exception of the Moto Q, which I wouldn't wish on my worst enemy. For the most part, they were solid, minus a few errors here and there. I will say that HTC has 90% of the time made the smart move on which OS's to use, and Android is no exception.
So far I like my Eris. Of course I can't find a lot of rich games, (yes, I love FREE things..lol) but that is expected with a new system. Given time, I'm quite confident that this OS will be right up there with WINMO, or surpass it.
I love the Sense UI, the vibration feed back, the app world, media, etc etc...no need to go on. And the fact that its open source?? C'mon, what else could you ask for?
My take, I should have NEVER left HTC for another phone, especially BB. But with Verizon jerking you on phone selection, sometimes you gotta settle for coal if you know eventually it will turn into a diamond. To dumb it down, so far
HTC+ANDROID= Satisfied.