don't get the behringer tube products. they aren't worth it. the solid state stuff is fine, but their tube stuff is terrible (i had a tube preamp of theirs for a while, can't remember the model but it was one of the rack mount ones). the tube is more for show than anything - they still use solid state through most of the circuit anyway. the tubes are also starved of power from memory and distort very nastily, i think anyway - for all i know it was the opamps distorting anyway - it didn't sound at all like 'tube distortion'.
if you can afford the extra cost of the focusrite then don't even hesitate to choose the cheaper behringer over it. don't get me wrong, i actually like behringer overall, but they are no match for the focusrite pres. i have a behringer ada8000 connected to an RME9636 hammerfall, and i just got a focusrite pro26io. the focusrite pres were a league above the behringers. the ada8000 is still more than adequate though, and i'll still use it, but the focusrite is worth the difference.
porl