I prefer CS3

I Have CS3, works good for me, haven't tried cs 4 yet...

CS4 is far better if your computer can run it like mine

CS4 as long as you have a decent GFX Card as it's GPU accelerated.

its about 50/50 with cpu. if you dont have a good dual core or a average quad core its going to be sluggish

Of course it will be sluggish with a CPU as it's basing off the GPU meaning it will use your integrated GPU if you don't have a card which is what 128MB max?

I have CS3 Extended. I haven't used CS4 so I can't really make a comment. I'm happy with CS3 though.

Newer is better.

(in most cases)

I use CS2 i wish i had CS4 though.

Both are the same.

they just have little features u might not ever use lol

PhotoShop CS4 runs fine on my like 4 year old laptop with 32mb graphics it runs smoothly with dreamweaver CS4 running at the same time to. but then agian i dont do much high end graphics making with it just put a few simple web designs togeather

I find that CS4 is more easy to use although if I had the chance to go back I'd have stuck with CS2... the newer-ness is just sounds more professional and it has a few new features, a nice new interface. I have plenty enough power on my new machine to run CS4 (and a game at the same time) so I'm not too worried about CPU/GPU use.

I don't even know if it's a step up, they did add 3d support I believe though. (Or was that only on Flash CS4?)

photoshop had 3d added to it i dont know how to use it but its there

Photoshop 7 is the best.

Oh dear god, CS4 has been released already ? I need to BitTorrent that shit. =] Thanks for the notice !! Haha.