I've been very happy reading on a Zire 72 it supports almost all the E formats and travels very well. although it may be beyond your price range, the palm store on line factory outlet perodicaly has it for under $150 (open box). You just have to be persistent and check back with the site on a regular basis. (I've bought two from them and been very happy both times.)
site link:
http://store.palm.com/family/index.j...goryId=1179667