I'm sticking with my playstation. Ever since the release of those awesome arcade collections, my gaming needs are pretty much satisfied. I've been tempted to purchase an actual used game machine, like the ones we used to have to fill with quarters or tokens just to play a game or two. But I figure why bother when I could custom build the cabinet myself to better accomodate the playstation and various controllers, television, a place to rest a drink and ash tray.
Not to knock any of the newer game systems, there is even a "crazy climber" available for PS1 in another arcade collection. I think that the Atari collections are the very best though I haven't actually purchased very many of the others. I wonder what Namco was thinking when they designed their crappy formats for pac man, galaga, etc. Ah well, at least they were finally available.