I just started with the PCE/Turbo stuff a couple years ago and I already have about 70 games I would never part with. There is a huge amount of stuff that was Japan only in that though (I have a PCE DUO R BTW). Some of the quality imports are very reasonably priced (though many aren't). There were a good number of great shooters here in the states, but in Japan multiply that by (insert large number here). Fortunately the cost of the import games isn't entirely based on quality (like every other system is I suppose...). I'm glad I didn't have to pay the kind of money that Sapphire sells for to get Spriggan (the first one, and it has nothing to do with the anime etc.), Star Parodia, etc.

Didn't take long to become my favorite console...

Also, while it was technically 8-bit, the custom processor (HU6280 isn't it) is faster than the SNES processor, which kind of deflates all of the "it's not 16-bit" whining from back in the day. I don't remember what the relative clock speeds are, but just wanted to point out that a lower clock speed doesn't mean a slower processor (neither does the bit thing either of course). Not that hardware is the thing to judge consoles on, just thought it was interesting.