On Fri, 8 May 2009 03:35:32 -0700 (PDT), Mike wrote:

OK, I finally figured out my compressor purchase and went with the
Campbell Hausfield 60 gal upright - Lowes was even nice enough to part
with it for $399 (gloat?)

The manual says that the tank should be drained daily. I'm wondering
what people usually do with their large compressors... do you drain
the tank every day, or just leave it pumped up so it's ready when you
need it?

Both. Leave the tank pressurized and just blow off the moisture from
the drain daily (if it is used).