I'm actually fairly new with all that is SNK. The first SNK game I owned was Sonic for NGPC(got the special package!). I got NGPC basically cuz of Sega and Capcom(Saturn, baby!!!). After I got Sonic, CFC, and MotM for Christmas, I got MS2nd Mission. That game kicked ass. Then I got Faselei!, and it was also extremely good. Then I got Magical Drop Pocket, PuyoPop, Bust-A-Move Pocket, and KoF R-2. Loved all of them. Then I got KoF DM 99. That game was extremely good, too.
Basically, most of that was babbling. But I'm just trying to give you the newbie point of view.
KoF DM 99 had great gameplay and characters, but did lack extras and replay value. KoF R-2 had more extras and replay value. I loved the game. I also loved SFA3 and all those other Capcom games.
You know what? I lost the point of this long post. It could have been shorter, but what are you going to?