I don't know, I'm not saying Boss is allround better piece of kit, but it fits my needs better.
Agreed!
In my case, I only use the preamps when needed for specific purposes. I have equipment that sounds great with my instruments plugged straight in. I don't need a pedal to create my basic sounds.
To me, the GT-1B has eliminated a bunch of occasionally used pedals, like phasers, flangers, volume pedal, wah, and chorus, and added a slow gear, acoustic simulations, synths, etc... the one or two song wonders, in a tiny space. I'll add preamps for certain sounds, sometimes even working against my amp settings for my "best" sound. If I played a synth or octaver or other effect often or all night long, I'd probably seek the exact pedal that floated my boat.
This is a GREAT tool when you need certain and many different effects or sounds for one or two songs each, and you can build different settings for the same effect(s) or chains, which is rather hard to do with discrete pedals.
I think the real user difference is the type of work an individual is doing. Those in an all or mostly original band can create their signature bass sound and play it all night long. Others who work with multiple acts, society gigs, or wide ranging cover bands may need to imitate many sounds, and a device like this can be very helpful. Without needing this:
I still use an external compressor, graphic EQ, and Q strip, for on the fly adjustability, but the multi-effects unit has replaced a lot of boxes.