GiantBomb:
"So no version is perfect, but the faster loading makes the Wii version the best choice, provided you've got the right controllers on-hand. Also, it's nice to get a collection of good, classic 2D fighters on the Wii, which doesn't have a ton of games like this. That said, it's still sort of hard to recommend the collection, especially if you already own KOF '98 in another format. The $30 price point on Wii and PSP is a bit much, and PS2 owners would probably be better off waiting for the updated version of KOF '98, called Ultimate Match, which Ignition is scheduled to release later this year."