Lots of good advice so far. Sax is usually recorded mono, and the reverb would in most cases be a larger, better sounding space than your room. So no point in using a room mic, it would likely give you a boxy, phase shifted result. I'd use the less-bright of the condensers, presumably the MC-012 with the Joly capsule, no compression. RNC is a good pre-amp, use low gain, and leave a lot of headroom. I'd start about two feet away, mid-way to the horn. In a better room, maybe four feet. No reflexion filter. Use a second mic for an alternative sound, maybe in a spot where it sounds best to the ear, compress that one if you like.
Ed Billeaud - Snowflake Studio
There is no justification for the exploitation of weaker beings. We cannot advance as a species until we respect the rights of other species. One Earth, all earthlings. http://www.soundclick.com/edbilleaud