I had a plan in place that I thought would make for a versatile lineup of basses. Now I'm rethinking things and considering my options. I'll lay out my needs first, then the original plan, followed by my new thoughts. I usually gig with a fretless and a fretted bass. I recently bought a Joe Osborn Lakland and it's become my #1 fretted bass. I'm sticking with my current fretless, and have been considering adding a second fretted bass to alternate on different sets. I'd like to have one fretted bass strung with rounds, and the other with flats. Plan #1 was to buy a Lakland Darryl Jones 4 string and leave it strung with roundwounds, and play it on the rock/dance tunes. String the Joe Osborn with flats and use it on the motown and blues stuff. There are a couple problems with this so far. First is that I totally love the JO bass and am not sure that I would want to have another 4 string to compete with it. Second is that the wait for the DJ is pretty long. Thirdly, the JO sounds soooooo good with roundwounds that I am not sure if I want to change it. Plan #2 has been formed as buying a DJ 5 string to use as the "roundwound" bass. That way, it won't "compete" with the 4 string JO. Even though I've never owned a 5 string, I have played a few 55-02's and love the feel. The main problem with this option is that any tunes requiring the roundwound sound will dictate that I use the 5 string. A secondary issue is the different scale length and feel of switching instruments between sets. So, what wisdom can you guys impart? Would it be tough to switch between the 4 and 5 strings in the same night? Which option would you choose?