So I just picked up a Boss GT1B and I wanted to throw my 2 cents in here. First some context:
I am a professional bassist with a few artist endorsement deals. I have been playing for about 32 years. My primary basses are Fender USA Jazz Basses (2 Custom Shop, Adam Clayton Sig and 2 American Pro). I use Ashdown ABM 500 EVO heads (UK) and Ashdown ABM UK cabs. My board consisted of: Keeley Bassist, Way Huge Pork Loin, Darkglass B3K, Line 6 G70 Relay, CAL Holy Fire.
Whoopty Freakin' Doo! I simply wanted to stress the point that I am a professional and very discriminating with my gear.
So....I absolutely LOVE the GT1B! I actually am currently running the Line 6 G70 Wireless into it and then I am using the Boss FS6 for expanding functionality. EVERYTHING else on my board has been replaced. Having said this....again some context about how I am using it:
Essentially I went in and created a clean patch and saved it User1. This is essentially my tone as if it were going straight from the Line 6 to the amp. Next I set up the FS6 to scroll my presets up and down as opposed to the up and down control buttons on the GT1B. Why? Well because I can now assign those 2 extra buttons as FX control buttons. Yes....it works great. This allows me to be able to toggle on and off up to 3 effects. (So whomever said you can't use this as 3 stomp boxes....WRONG). Next I set up the Limiter and assigned it to one control button. I'm basically using mild compression and can now toggle that on and off via foot switch 1. I then set up some tube drive and assigned it to controller 2 so I can toggle that on and off as well. Last I set up an eq that drops some treble and boosts some bass and assigned that to control 3. That became my overall clean setting. So in other words when I select User1 patch it comes up with my clean signal. I can then toggle on or off: Limiter/Comp, EQ and OD. (You can assign them in any order etc..You can also default so that all 3 or any combo are on or off when you select the patch)
So for my uses I then set up another series of patches. User 2 has the Comp always on and I set up 3 mod effects (Phase, Chorus and Octave) assigned to the 3 controllers. and so on and so on.
THIS THING IS LIMITLESS for how you want to set it up. More importantly, I found that there are TONS of useful great sounding effects. I had no problem tweaking out about 4-5 OD's, a couple of distortions, a couple of Fuzzes, a couple of Octave settings, Chorus, Flange and Phase. I don't use Reverb, Delay or Synth for anything so I'm not going to comment on that. I also don't use the preset patches at all, so no comment there. Bottom line is that this IS pro level, highly tweakable, easy to use, etc...
I have used the Zoom (Both the old and new version) and hated both. I also used the Line 6 Helix LT and really dug it but found it was overkill and that the Line 6 drives kinda lacked.
Anyways....SERIOUSLY impressed. GREAT tool for only $200! I spent another $50 on the FS6 and $10 on a TRS cable and I am set. Haven't even begun to play with amp modeling, looping etc....because I don't need that stuff....but It's there if I change my mind!