The Sytek's are very fast, clean and quiet. They sould work well in any application unless you desire noticable colouration.
Technically the two drawbacks I percieve with the Sytek are the gain pots where only have a 1 to 9 legend (when we really want 1 to 11) and the absense of a input pad (The unit has a minimum of 12dB gain). This could be a problem with certain mics when close micing a kit say.