I still rather love them myself, though I haven't kept them for quite some time. I don't think that there is any other more 'tame' cichlid that you can keep as a pet. Oscars are extremely common, yes, but it is hard to find high quality colored ones. I have yet to find pure white albinos with lots of tiger striping; either they are all white, or they have tiger striping but with lots of black 'smudges'.
I look at rare fish a bit differently: I consider an impeccable show specimen of any large Central American cichlid as 'rare'. How may times do you walk into your LFS, and see a beautiful 16 inch fully colored hmm...Synspilum with a nice nuchal hump and without any defects or deformities? I can honestly say NEVER, even though synspillums are fairly common! Oscars are a bit easier to find, but usually they have the crooked jaws, excessive scarring and unfortunately, most have a bit of hole in the head.