i put my vote in for the Focusrite ISA one; super clean, really sweet sounding pres and a lot of functionality. the box design is a bit frustrating for rack mounting but i'm guessing they know their market and have aimed it as being a home recordist first "step up/upragde preamp" so the desktop design is useful in that respect. i'm currently saving like mad to pick up the ISA Two; less features but the preamps alone are so nice that another two in my setup would be a god send