The audigy can record 24 bit, but you have to get the kx drivers. I don't believe it can with the creative drivers, at least mine hasn't been able to. With the kx you can actually record 3 stereo channels or 6 mono channels simultaneously. With the creative drivers, only one stereo or two mono.
I use an Audigy 2 Platinum and a M-Audio Audiophile 2496. I prefer the sound of the m-audio 2496 but with the kx drivers for the audigy, the latency is amazing on both.
I've have never believed what people said about the poor recording quality of the audigy. From my experience on these boards, bashing creative is the national past time, enjoyed by all. When I first installed the Audiophile 2496, I did some tests. I recorded to both the creative and the m-audio simulateously. I then played it back for some friends and it was a 50/50 split between which one they like better. They don't sound identical. They just sound like they have a little different eq. But I always mess with the eq of each track anyways, so that is really a big problem.
Don't believe the hype. Creative is not that bad. But I would still buy the m-audiophile 2496 for the $150 rather than the creative at $200. But if you want surround sound and the ability to do more than just record (games, etc), the creative is not too bad of a choice.