Sound — 10
I use this pedal with a Peavey 200w and its sounds epic and the sounds are clear and strong. The Wah Wah is excellent, however you need to avoid the reverb because it don't sound too good. Overall the sounds are amazing, but I do advise you create your own sounds. I have created about 30 effects and they are permanently saved onto the pedal until I reset it.
Overall Impression — 10
My band play mainly rock and listen to bands such as Avenged Sevenfold and Rage Against The Machine and this pedal suits this perfectly. I been playing for about two years and I use this pedal with my Yamaha Pacifica 112v. I have no regrets in purchasing this pedal and it has served me well. If this pedal was stolen I would, without a doubt, purchase another one. It is much better than the Zoom G2 and an overall amazing product that a good guitarist needs.
Reliability & Durability — 10
You could state your life that this pedal will not break. I use it at gigs and it's never failed on me once. With this pedal you won't need a backup pedal. If you look after this pedal I don't see what could go wrong with it. It is solid and has firm strong buttons and footswitches and is well protected if you drop it etc (I know, I've lost count of how many times I've dropped it).
Ease of Use — 10
The Zoom G1 Guitar effects pedal is an amazing piece of kit and is very useful for achieving a very large range of sounds from bands like XTC all the way up to bands like Metallica and Avenged Sevenfold. I bought my unit second hand (in perfect working order) and I have never used a better pedal than this. The manual supplied is very clear and helpful and its easy to edit and create your own patches (and it has a built in tuner which is very handy live).