I have a G& L 2500 Tribute and really love the tone/payability/etc. It is the best sounding bass I have owned including a CBS era P-bass. Unfortunately I don't love the B string. This is my first 5 string. I have tried different strings, but it just doesn't work for me and I have not worked it into my paying (other than as a thumbrest). I am considering trading it in for a L-2000 or a JB-2. I'm interested in hearing from guys who have gone back from 5 to 4 and any who can compare the JB-2 to the L-2500 or L-2000.