I have the PS2 xploder. It does a decent job of making the PS2 output 480p instead of 480i. The 720p option letterboxed the picture in the middle of my screen with black bars on all sides (maybe it won't do that for a native 720p TV).
I haven't been playing many ps2 games lately, but I did use it for Persona 4 and Devil Summoner 2 and it made the image a bit crisper. But PS2 games already look pretty good on my TV, guess the built-in upscaler does a good job.







