I currently play in a prog metal band, and I am in need of a 6 string bass. I am currently looking at a Spector Euro 6, MM Bongo 6, Ibanez SR5006, Warwick Thumb 6 or possibly and Carvin LB76. I've played the Bongo and the Ibanez before and currently own a Carvin LB75 so I'm familiar with the feel of those, but I have never played a Warwick Thumb and I've played a few US Spectors. I would like to hear other experiences with the basses listed above and what your opinions are on why or why not to choose a specific instrument. FYI I also play Jazz and Funk so I was like to choose the most versatile bass as well.