So it looks as though my CRT TV is finally starting to show some signs of dying, and I've started thinking what the best way of replacing it would be for all the retro consoles that I own. Getting another CRT might prove to be more difficult than last time I had to replace it, so I was wondering what would be the best choice for an upscaler or similar? It would be nice to have the consoles all working through my current TV, but only if I can get a decent picture and have no (or no noticeable) input lag.

As its a field I'm not very well versed in, I'd like some advice - what's the best upscaler out there that'd let me play my consoles (mainly Famicom, Mega Drive, Saturn, N64, Neo Geo, Playstation 1, 2) on my HDTV. Also, not sure if this would be an issue - but as I'm in PAL land, would that cause any issues? I've got most consoles modded in some way to output in 60Hz though, its only really the PS2 that'd be an issue in that regard.