I just picked up my FX 100 a couple of days ago and I like it so far... but there are a few issues.
I find that when I stream music from my iPhone 5, the music cuts out momentarily (.5-1sec) when switching patches. As well, there can be a significant delay when switching patches.....and oddly enough it's not a consistent delay. Sometimes it can be 4-5 seconds before it seems to sort itself out. FWIW i don't experience this when my iPhone is disconnected.
The unit said i needed to update and i believe i did so successfully.....not sure if it was just the unit or the app as well? Hopefully if this issue is on apple's end they can sort it out quickly.
The only other issue I've had so far is the bluetooth button. It's not the easiest to push.....like the button isn't completely lined up with the switch. it seems to be lower on one side.
On the plus side... I love the ease of editing. The tones are so easy to match to the songs i play along with...Just wish I could switch mid song.
Judging by the search function, there's not a lot of experience with the FX100 yet, but if anyone has any suggestions I'm all ears!