Yamaha DTXpress/DTXplorer/DTXtreme

First off, I want to say that I haven't been to this group in a while. In fact this is the first 
time that I've seen the DTXpress III (I'm a DTXpress II owner). Wow... It looks pretty slick. 
Especially the new high hat assembly. 

Anyway, I want to amplify my kit. I want to play loud. I'd like to be able to reach acoustic 
kit volumes. What's the best way to do this? I've been told that a PA is the best thing to do. 
I've also been told that I can use a keyboard amp. What do you guys think? What have your 
experiences been with amplifying the DTX? How much power do I need?

Thanks for your input!

Sam