Electronic Japanese Dictionaries

Are electronic Japanese dictionaries really useful? I'm still debating whether I should get one. I'm confused as to which ones have English menu's. I keep hearing about "Canon Wordtank G55", it doesn't have the option to draw in the kanji with a stylus, I was just wondering if it's troublesome to look up kanji without it.

http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&ssPageName=STRK:MEWAX:IT&item=300326607750

Here's the cheapest place I've found online FYI

I'm pretty sure that casio are the best. Also don't get a dictionary without a a way to draw kanji. Don't even get one if you won't get that. They're seriously 100x better with one, and it helps you remember kanji by drawing them in to look them up