Ah yeah man, 4 strings is a different ball game entirely, I can go crazy with the double thumb pops and triple thump etc. That's kind of what makes me want a nice four string, but when I ever play a four string is when I suddenly decide I want to do Dream theatre or Threshold covers, which both use the Low B a lot. I definitely need to try a few wider spaced 5 strings like I owned many years back, and at least If I don't enjoy it can drop back to a 4. I guess im looking to hear from players that have both gone from a 4 to a 5 and stayed, and also those that went back to a 4 from a 5 for whatever reasons!