As A young man,I used to race mountain bikes. They were heavy, had 15 speeds ,but were tons of fun. Then they got more gears.Then they got lighter.Then they got front suspension.Then more gears ,again.Then they got rear suspension. Then they got even lighter. ALL PROGRESS. ALL FASTER ALL BETTER. Then a bunch of "RETRO GROUCHS" (like me). Revolted and went to SINGLE speed bike,with no suspension. Does this sound familiar? 4 string.5 String,Lighter better faster. Funny thing is.... Those single speed guys are so damned smooth on their "retro rockets" thats it is truly poetry to watch these guys . They are all about fun. And the ZEN of the simplicity of the whole thing. These guys are (to me)the most fun to ride with. Basses? That three string is sounding more appealing all the time.