The LS-2 is integral in my bass sound, such a great pedal. And, despite my other experiences with Boss products, I hear no amount of "hum" added in, so that's nice
My set up is:
Peavey BQuad5 -> Guyatone Micro Tuner -> EHX Tube EQ -> Boss LS-2 -> GK 1001RB-II
The Boss LS-2 loop is where it gets interesting:
"Creamy Dreamer" Custom Fuzz pedal (modded Russian Big Muff circuit, made for my band's guitarist to emulate Billy Corgan's sound but I appropriated it for myself) -> Morley Volume Pedal -> Boss DD-6 Digital Delay
I keep the above set up always on, with a ~70/30 blend, but generally have the volume pedal down to "contain" the fuzz. When I want a strings-like modulated affect I slowly step down on the volume pedal, then back. The delay is there to "catch" the sounds and carry them out, despite the volume pedal being choked down upon. I absolutely love this set up.
Currently looking to pick up A) another delay pedal to put after the Boss LS-2 for a subtle effect B) a nice reverb pedal to set after the fuzz pedal in the chain.
tl;dr, the Boss LS-2 is AWESOME. I generally prefer "clean" tones, so this set up is perfect for the purist in me.