Here's the current incarnation of my bass board
And my guitar board
I bought a Fender mustang GTX100 guitar amp last week, which has a ton of fantastic sounding pedal models onboard—including a space echo which I have fallen in love with, so the guitar board is pretty much redundant now—apart from the SY-1 of course! I initially thought the GTX was just going to displace the MS-50G, but the overdrive, fuz and distortion models are actually usable and sound & behave like the real pedals to my unsophisticated ears.
The spark mini on the bass board has also fallen out of favour as I replaced it with the mojomojo to add a bit of oomph when needed. I'll probably try to find a way to fit the SY1 on bass board. Maybe by removing the spark and repositioning the thumpinator.
The Boss SY-1 is so easy to use and is the first usable guitar synth I have tried. I still have a casio MG-510 midi guitar somewhere, which was unusable due to latency and it was a faff to set up. I've owned a few other synth pedals over the years including an akai deep impact which I didn't keep for long, and an EHX organ thingy which didn't trigger well for me. The SY-1's triggering, lack of latency, ease of use and of course the sounds mean that it is probably a keeper.