#1
I'm sort of having a toss up between some different overdrive pedals. Just looking for a different sounding overdrive than my Fulldrive 2 MOSFET (not getting rid of it, just wanting to expand) and replace my Route 66. The Fulldrive 2 has a sort of compressed and singing overdrive (when dialed the way I prefer to hear it), so I'm looking for a more mild and open sounding overdrive. So far, I have come down to a list of these.

Mad Professor Sweet Honey CB version
Xotic AC Booster
Barber LTD SR
Cmatmod Butah

I really can't decide, and I also can't find them anywhere to really test out. Any comments or criticisms to these?
Fender Telecaster
DeArmond M series
Vox Night Train 15 head w/Weber loaded 1x12
Dunlop DVP3 Volume (X)
Klone circuit/Russian Big Muff 2in 1
Fulltone Fulldrive 2 MOSFET
TC Electronic Nova Delay
TC Electronic Nova Repeater
Line 6 M5
#2
Allen Hinds used an AC booster in one of the Jackson Ampworks demos. I think it was either the Atlantic or New Castle. Sounded pretty good. Other than that I got nothin.
#3
The LTD is a nice choice. It complements an AC15 really nicely. I'm running a Silver LTD into mine, and it sounds very natural.