The few things to keep in mind when getting a phone is what version O.S. it ships with( go with 2.1 or 2.2) unless your going to root. One of the problems with the Android OS is how many phone have it and some are going to be left in the dust when it comes to upgrade(again not a problem if you are going to root).
1gz processor min., front facing camera(if your into video calls), expandable SD slot(they make up to 32gb micro). all this will affect how smooth your phone will run. It's all in the details and if your going to throw $200, might ass well get the best one you can find.
Also make sure to check what an app. has access to before you install, some are very invasive.
good site, http://androidforums.com/
nerd tv, http://cnettv.cnet.com/live/android-atlas-weekly/