This bass is my baby! In my honest opinion, I have never played a bass that sounded better than a Kubicki. It has a VERY flexible tone range because it has passive AND active electronics. It also felt better to play than the other basses I tried out because it is ergonomically designed to fit the contours of the human body.
I had a few features added on mine. The standard ex-factor bass (with the drop-"D") has 23 frets. Mine has an extra fret, giving me 24 frets, as well as a slanted cutaway in the body which gives me an angled access to the upper frets. To simply put it...I LOVE THIS BASS!!!
Other basses I use:
Carvin LB70 fretless bass
This is made of Koa and is has a gorgeous finish. It is my only bass with a neck-thru body (great sustain!!). Although it is an active bass, I try and keep the tones down to get a passive "natural" fretless sound.
Yamaha RBX 800A
This particular bass introduced me to the idea of "access angles" which I later used to customize my Kubicki. This makes it easier to finger the higher notes by the 24th fret. I put EMG pick-ups in it. The bass has a sleek design, and a very bright tone. It is excellent for harmonics, but not a great slap tone. I may string it with strings an octave higher and use it as a "piccolo bass", but for now it is my back-up.
Washborn MB6 six string bass
This is the modified verion of the XB six-string, with a deeper cut in the body to reach the upper frets. Unfortunately...something terrible happened. THE NECK CRACKED!!!! Washburn DID NOT honor the so-called "lifetime warranty." As far as I am concerned, I would NOT reccomend their guitars to anyone.
SWR Goliath II (4x10) and Big Ben (1x18) speaker cabinets
Samson Wireless
Digitech/DOD effects
Peavey sound system / home studio