I've just got a new SLO stingray HH and its a beautiful thing. I'm used to playing a 89' ray with the finished neck and my slo more than keeps up in terms of sound. I still haven't decided if I prefer the thinner neck of the slo, but it is very comfy and easy to play. I actually only got the slo because it was the only bass in bass central with the finish and pickups that I wanted in the small window I had to order, but its worked out really well.
If you need a reference lets just say that its closer to the %ender Jazz style neck rather than the standard stingray which is closer to the P.