I bought this GT-10 second hand, though I originally wanted the GT-100 but couldn't find the money for it, so I decided to try the GT-10 out. I read a lot online about the difference between the two, the GT-10 & GT-100, and the similarities is pretty much the same. Of course the GT-100 is a more up-to-date version and better in sound quality, but the GT-10 is really a piece of nice and good sounding effects and amp models. I play in a band, a cover & partyband, and I wanted to be able to have a all-in-one solution. I got tired of all the tap-dancing with regular pedals, so the GT-10 serves me very well! It's really a delight being able to have it all in one box. Some of the features I really love, and use all the time, is the 'assign' function, which allows you, via the two CTL pedals in the unit, to assign different effects to your individual patches. I use it for turning overdrive on/off, chorus on/off, switching from one overdrive to another. Also, via the 'assign' function you can choose which parametres is being controlled on the selection you've selected. The 'Solo Switch' is amazing, it gives the overdrive you're using a boost for solos, really great! Even though the GT-10 is discontinued, I really think that it's one of the best multi FX still on the market today! If you're a multi FX kind of guy or you're getting tired of tap-dancing, try the GT-10!