I thought I wanted PS2 backwards compatibility, but all I ever see at places like AVS were complaints that it doesn't quite work right, so I decided it wasn't important enough for me to pay a premium for it.
My thinking was it would be nice to take advantage of my widescreen capable PS2 titles without them looking horrible on a HDTV, but if you turn on upscaling, it seems to mess up the aspect ratio if your trying to play on a hdtv with widescreen PS2 titles, and isn't displayed correctly. So you either turn upscaling off, which means you might as well use your PS2, or turn it on and not have the correct AR.
Here is the thread that basically convinced me to wait for a deal and not pay extra for BC. I'm sticking to playing my PS2 games on a PS2 hooked up with component to a 4:3 CRT.
http://www.avsforum.com/avs-vb/showt...ight=upscaling