Yamaha DTXpress/DTXplorer/DTXtreme

I am desparately wanting a set of E-drums. I've seen these sets(with 
bass pedals and all that jazz) go for about $600 on E-bay. I'm just 
wanting to know from you guys that are familiar with the kit...How 
are the basic sounds? I will only be using it for practicing and some 
recording at home. could I play it through my guitar amp? And how 
would I go about putting it directly into my recorder? I know, you 
guys have heard this a million times, but...Any input would be 
GREATLY appreciated, as I am planning on getting one for x-mas. 
Thanks. =)