I'm not really impressed by the 737 (Avalon tube channel strip). I do, however, *love* their solid state pres M5 and AD2022. I own AD2022, and it is a workhorse. For tubes, consider Pendulum. Lots of folks will try to talk you out of buying a top flight pre, because it bugs them to see a guy on a permit driving a Ferrari, but you know, you can learn recording with great gear just as well as cheap gear, if not better. I have never regretted spending the money on good mics and pres, personally. I don't think I'll be selling my Avalon anytime soon.-Richie