Well, I have 'em all. Go with PSP...easy to use...quick and dirty to get the job done. Very easy to learn. Only about $100 bucks, often less, with a rebate. Then, if you have money left over...go for zbrush. It seems awesome. Sadly, I have not yet had time to learn its interface...Photoshop is like 800 dollars. I don't have Deep Paint...but, I think from what I have seen it is pricey.