There’s a shorter version of it. The link is also at the bottom of the original post, but I’ll post it here again: (non)USB mic for classical guitar rec.(findings/conclusions)
I haven’t done any stereo recording yet (that is with two mics). I haven’t done that much recording with one mic either… I’m still on my way to “build” a nice echo-free / noise-free recording room.
I’m quite happy with the ART USB Dual Pre. Happy too with the T-Bone mic (SC1100). If I ever buy a second mic there’s a good chance I’ll go for another T-Bone. If it was now I could go for another large diaphragm such as the SC1200 (should be a slight improvement over the SC1100 for just a few more bucks), but I’d probably give it a try at a small diaphragm such as the SC140 (which is a 1/3 of the price for the SC1200 and I’m very curious to listen how the guitar would sound on it…). That just has put me thinking about getting my hands on that SC140 hehe 
I might actually do it sooner than expected!
There’s also a nice SOS article about acoustic guitar recording. I think it’s this one: How To Record A Great Acoustic Guitar Sound