Hey blood, yep, i think it's time to ditch PS4 and "move-on-up". as to ver7 or either of the "CS" flavours... it really depends on what you want out of PS. Most of the BIG changes happened in 7 (brush engine rewrite, file browsing, healing, ImageReady(7) tweeks...), and in CS they've fixed some things like, File Browsing won't "crash" you now that it's handled by a new app called Bridge, the integrating of RAW image files are better supported (a big plus for digi-photogs).

as for finding an upgrade online, i'd steer clear of the "amazing low price of $$" as these places are "shady" at best and will rip you off most likely. they sell what they term as a "backup" of your program. you need to already have the valid ULA and serial number for registering. if you do find someone on ebay MAKE SURE they transfer the license to you through Adobe or you'll be screwed as well.

:)
retrocity