in day 1, i scared too much with my android phone's battery life, it was 10 hours without doing anything with the phone, now it is 2 days with mid useage.I actually DO like the Evo, I'm just really concerned about the battery life. I use my iphone online ALOT.
And I'm afraid they won't have my favorite games to download.
you will have widgets and you need to turn the things off like 4g-3g to 2g or wifi, also remove some battery enemy widgets (like facebook widget). one click to turn off and on - easy.
just dont worry about battery life.
htc sense is good but after some time it may be boring. and if you are getting bored with your phone that means you need to dive into the amazing world of androids custom roms (you will find treasures on xda) (hey, start here: http://forum.xda-developers.com/showthread.php?t=865204 )
You are living in a dream land, the US. things are cheap there and you can easily switch 'em. Here in Turkey, an iphone4 (16gb) is 1250USD!
Wish to be there and taste all the phones, buy on ebay and sell next week