Having used the Zoom B1 Four (for bass guitar), I had a pretty good idea what to expect. To be honest, I was a little taken aback by some things.
When I connected the device to Guitar Lab, I realized the memory was already full; I would have to delete some of the pre-installed patches even to update the list. That's not great customer experience. I also found the sound "out of the box" to be a bit on the artificial side.
To be fair, you can address all issues with a bit of tweaking, and someone like me - with previous Zoom experience - faced no issues. But I can imagine a newcomer would be intimidated.
Having said that, for the price you pay, you get a lot of goodness. Basically every sound you want to replicate with your guitar, it's there - including the wah pedal, which is customizable and has a good response. No complaints.
All in all, I'd definitely recommend it, but be prepared for a bit of fiddling, to make it sound the way you want to.