Primary difference is that the more expensive DXA-SLR has built-in preamps (to help out bad DSLR preamps) and AGC disable (for DSLRs with automatic gain control). For your camcorder, all you should need is the DXA-2T.
I thought about going this route, but bought a Tascam DR-40 and a Sescom LN2MIC-TASD100 cable instead. About the same price as a 2T, gives you your XLR inputs, and you get a pro quality 4 track 24-bit 96kHz recorder thrown in for good measure!
Cheers,
Bill
Hybrid Camera Revolution
