I love my M9 Carbine. Been using it for about 10 months now and about the only thing that has been comparable to my ear is the Tecamp Black Jag 900. The Tecamp is amazing but I love my Carbine too much to make the switch. Anyways here are my settings for my 3 basses.
Number 1
Bass: Fbass BN5 (Ash body with Ebony Fingerboard, Fbass Strings)
Gain: 10:00
Bass: 1:00
Mids: 10:00
Treble: 12:00
GEQ: Off
Compressor: On (Threshold at 9:00, Ration at 12:00)
Voicing: 2 (10:30 one)
Cab: Fbass 2x12 (1300 watts at 4ohm)
Number 2
Bass: Fbass VF5 (ash body, maple fingerboard, DR Marcus Miller strings)
Gain: 10:00
Bass: 1:00
Mids: 10:00
Treble: 12:00
GEQ: Off
Compressor: On (Threshold at 9:00, Ration at 12:00)
Voicing: 2 or 3 (2 for slap, 3 for fingerstyle funk)
Cab: Fbass 2x12 (1300 watts at 4ohm)
Number 3
Bass: Fbass BNF5 (Fretless with ash body, Gaboon Ebony fingerboard, LaBella Nylon tape strings)
Gain: 11:00
Bass: 12:00
Mids: 10:00
Treble: 12:00
GEQ: Off
Compressor: On (Threshold at 9:00, Ratio at 12:00)
Voicing: 4
Cab: Fbass 2x12 (1300 watts at 4ohm)
My first listed bass is pretty much my standard use most of the time workhorse. I use it for rock gigs, country gigs, pop gigs and so on. If I'm feeling lazy and only take one bass on a gig this is it and with my M9 and that bass I can pretty much get whatever kind of sound I want with a flick of the voicing dial or an adjustment of my on bass EQ.
Bass 2 is my slap/funk/R+B setup (when I'm not lazy and just take one bass)
Bass 3 is my fretless setup. Jazz gigs and I use that alot for rock ballads when I'm not lazy and drag it out to rock gigs

.
I played for about a year and a half using a Mesa 2x12 powerhouse cab and I really enjoyed it. My only thought for an upgrade was possibly a Bergantino 2x12 but I wasn't quite ready to pull the trigger on it. Last month I played into the new Fbass 2x10 cab and then the 2x12 and that pretty much ended the debate for me. If anyone gets a chance to try their Carbines though an Fbass cab I strongly recommend you give it a shot. I know for me anyways the tone that I had in my brain and could never quite get on stage but came oh so close to is now something I'm getting on a regular basis
Tom