Hi, yes I like it. The guitar modelling is better than my Variax 500 as well.
I went this route as I am a south paw player and have gotten fed up of waiting for Line 6 to ever do a leftie version of a JTV.
my Variax 500 is great but getting old, so I was worried about it as a main guitar.
So for my 50th birthday (mid life crisis number 5!) i purchased a Mexican strat in Black, left handed, and fitted the GK3 to it. It plays much nicer than the Variax, and certainly the acoustic modelling is better.
For straight guitar sounds I send the modelled GR55 output straight into a Line 6 Helix, as the flexiobility of processing is better than the GR55, but you can then have a lot of fun with the GR55 guitar synthesis, but I must confess I need to experiment more with that, but am usually time poor, so have been neglecting guitars for keyboards of late…