GTO+ and GTO Wizard user here. They're both great products, I think one of the main disadvantages of GTOw is that you can't nodelock, but you don't need a super PC because it's almost all already solved, and the interface is really nice. Really happy with it.
GTO+ is quite good too, a good choice for beginners and easy to use.
If you're interested in GTO Wizard DM me
Cheers.