Cheap Backup Camera ?

I'm setting up to do a relatively complex shoot. My budget is a limited. I'm shooting mechanic videos this one will be showing how to over haul AC system on a Corvette.

I figure I'll need at least 3 cameras. One on the engine compartment, another on a flycam w/ operator, and at least one more focused on me explaining and doing the repairs.

So I've got one camera already it's a Sony Handy Cam. Camera isn't the best but it does get a great picture if I setup the lighting just right.

I wasn't sure where to post so I figured I'd post in here... I'm looking for another cheapo HD camera like the handycam. I went to Best Buy the other day, and saw they had a whole slew of them for $200 from Panasonic, Sony, Canon, etc.

Has anybody had experience with these cheapo's and one to recommend. Or a set of features I should be looking for ?

Thanks!