Hello, actually I was looking for a kind of "Swiss knife" of guitar work for my guitar when I'm with my girlfriend on her couch alone .. Anyway

I use it for one month and I am delighted with this choice even if I find some purchase honing (€ 318 at The Home Studio)

I use it mainly to play on the patterns of my Boss DR880 drum machine which I recorded qq examples on the GT-R1, and also as a "notepad" when I take my guitar lessons with my teacher (very good sound played with 2 microphones)

I tested the function of slowing down the tempo without altering the tone it works well.
on the other hand, delete parts of the guitar on a song to play over, I was not sure (I just tried a piece, Cocaine, the AC is very very average)

I have not tested the effects low against the effects for guitars are OK, in that it sounds good in the headphones, I ask no sounds grandiose guitars with this kind of gear.
The bar is OK

Otherwise, I hesitated with the Boss Micro BR home bcp is cheaper, and Tascam's previous products and finally I was convinced by the ergonomics of the R1 GT that matched my needs best guitar trainer.

I put as 8 out of 10 rating because I think the high price (again with the € 69 micro BR) and the function of DELETING guitar that I was not at all convinced.
Otherwise, I'm really happy that choice and remake that fully meets my needs.