12
I've never been a fan of grinding...well, unless a game can make said grinding engaged and fun enough to deny repetitiveness. And I play a good deal of RPGs, J and W, so I've been subjected to a lot of it. Though Pokemon's one of those games where you can get to a point where you're stuck between strong trainer and a bunch of weak pokemon to train on, which is why it took me FOREVER to beat the kimono girls in HGSS. That's why...whatever strategy I used in Pearl, Emerald, etc. worked so well back then.
That's why I'm glad that they're adding hordes. Horde Audinos would make for great training spots. Since BW is seems like they've been trying to cure the grinding predicament to make training less of a hassle. I'm looking forward to XY.
Also, I'd have to hear the HGSS originals again to hear the differences.