I've heard that these are no good for recording.
I am thinking of getting the Samson 7Kit (1 x QKick, 1 x QSnare*, 3 x QTom* and 2 x CO2 pencil condensor). Alternative is get some more SM57s for toms and snare, a cheapish (suggestions?) bass/kick and a second Samson CO1 large diaphram condensor...