There are a lot of things to consider...

The first of course being price. That is the single most important aspect to it. You can only buy what you can afford. Then you work from there as far as choosing goes. Of course there are certain things you want/don't want/don't care about in different receiver units.

Some are geared for extremely excellent SQ (8-volt preamp outs) (Eclipse AV8132, $?) and some are loaded to the hilt with features or boast best picture quality (IVA-D900, $2,300 (msrp usa)). There are tons of manufacturers.

Most fit the 1 1/2 (moany only take up 1 din slot) worth of Din the 5th gens have.

You can find a ton of info online or in mags, and I can help for what its worth. But since you know what you want it for (PS2 and DVD) just decide how much to spend and look.

Suggestion, although I haven't found to many "just fold outs" the PS2 could be both player and DVD player? MIGHT end up saving you a bunch of money. Just depends on what features you want with it. There are a ton of choices. Again how much $$ you want to spend will crunch the choices (if its low), otherwise the sky is the limit.