I'm currently thinking of the PSP, but I have trouble buying Sony products because of moral issues. The Dreamcast always had a more powerful graphics processor than the PS2 in many respects, mainly full scene anti aliasing and ease of programming (It accepted OpenGL/Direct3D), and looked infinitely better. Of course, the masses are asses, and chose the PS2. The PS2 CAN, however, render 75 million polygons per second - In Atari Jaguar mode. Flat shaded graphics and no textures there - It can render 12 million with full details enabled - and the Dreamcast can do 7, not to mention the the DC's NEC PowerVR 2 GPU multitexures much faster and can be made even faster with the aid of the Hitachi SH-4's triangle setup engine.
PS2 never even really was a very advanced console - the specs were overhyped, as was the PS1. The PS1 claimed to process 1,000 million instructions per second, and a 75MHz Pentium could just push 50.
It could never even compete with the Pentium. MIPS is no longer a valid measurement of speed for obvious reasons - there really is no control between architectures.
On the other hand, their console reliability is so poor it's on par with a Yugo. It seems to me like a cheap way to push extra units and inflate install base numbers - So you get a moral slap to the face and an investment that punches you in the gut.
Ethics + Reliability = No Sony for me.