This is a very different take on the "How many strings?" issue, so please don't dismiss it as such.
Currently I play a fretted and fretless 5, and I'm happy with that. I like 5's because they are very comfortable while adding some range and position possibilities that I use very often.
Looking (towards months from now) at my next bass purchace, I'm considdering number of strings. I don't want another 5, because I need one of the two choices that I'm down to more.
I'm making a decision between 4 and 7.
7 is attractive because I'd greatly appreciate the extended range - my playing suits it well. As for whether it's managable for my hands, I'm sure it is, and I'll be able to adapt to it.
4 is attractive because I know I could really fly on one. I know playing it would seem really easy after 5's all the time, and I could really focus on perfecting my technique. Range is the problem, but in a regular band setting I know 4's can hold out just fine.
My dilemma is whether I want to have the freedom to play with greater mobility and and clean technique, or whether I want to let the music that becomes possible on 7 win out and force myself to better my technique enough for that.
Any input is greatly appreciated.
Thanks

-Jeff