I've recently started my journey into cubing (2-look CFOP; PB as of writing is 1:07) and this is my first GAN product, but I must say that this one feels very satisfying. Turns great, has a satisfying sound, corner cuts nicely despite the clunky core (a more or less inevitable artifact of being a Smart Cube), stock magnets give nothing to complain... Also the way the cube can be customized doesn't require any fancy tool; it comes with a piece of metal but one might as well just use a paperclip or fingernails to get the job done when in a hurry.
I had no problems connecting it to csTimer. The cube basically wakes up when you pick it up, you usually don't even have to shake it. There really isn't much more to say. I can't compare it to any competitors, but it sets the standards high in my opinion. Also I can't judge how immune it is to corner twists on the various settings since I can't turn fast enough for this to be relevant. I of course can recommend it to beginners.