I ordered this product to replace an older, cheaper, broken multi fx I used for years. I did a lot of digging and research and this seemed the best value.
TLDR: Sound demos are making this sound better than it is.
First impression of this unit was pretty good. Its complex, it can do many weird things, but it wasn't too difficult to learn the controls.
Build quality is good, nothing to complain about.
Sound quality is where I start to have my concerns. There are lots of sound demos on sites like YouTube and they showcase some of the presets, but let me tell you, I can never make those presets sound the same as they do in the videos. I tried all 3 of my electric guitars, and they all sounded similar, but not the same as those sound demos. They were meant to be the same patches, I didn't tweak them. You can apply a global eq to the whole units output and that helped but it still sounds significantly more "digital" than in the demos.
The effects in the unit are great. There are tons to choose from and customise. No complaints there. IRs are good, not great but good. The amp models are the weakest links in my opinion. It takes a lot of mixing and matching drive pedals, amps, and cabs to get the tone you want.
I would, and will use this unit for home or band practice. On stage? maybeee.... In a studio? not a chance.
If you just want something for home and you know you have the time and patience to mess around with the tones then this unit will be good enough for you. If you are looking for more professional stuff then, I hate to say this, but save up a bit more money for better stuff.