Many effects, majority of them usable. Amp sims and distortions have a digital hiss but that's to be expected at the price point. A few of them can do the trick. In short - I've heard much worse for more money. Modulation, delay and reverb vary from very good to excellent. Only that is worth the purchase.
It's just right about OK to handle it and edit the effects, just forget doing it inconspicuously during live performace. Except if you only do the preset switching with your sound banks set beforhand for a specific PA / amp. Not too many places for pedals cabs and amps - only 5 (five) but it does the job if you have multiple patches per song.
Build quality is very nice for the price point. It's a very durable, thick and light plastic that looks like it's gonna last a long time. Footswitch height and shape are very confortable and pleasing to use, even more than BOSS-es.
Looper is short, but for practice it will have to do. 1 minute instead of 30 sec would be ideal.
Recommended buy for practicing, basic recording and casual reharseals, and basic effects (mod, rev, delay etc) for gigs.
Cheers!
Not related to the review:
I'd love to see Zoom make a dedicated multi track (say 2 with 1 minute each) looper like the boss RC 500, but more simpler, hardware like and in a lower price range (say 100 eur). I wouldn't mind the casing of the G1X Four for a design start. Maybe replace the volume control with two additional buttons or so.