It took me 1 year to get the tone I wanted and I had owned this project's predecessors 8 years before finally really using it. It's expensive up front but the upgrades are cheap. I haven't seen any new products in a few years so I may abandoned this product for hardware gear.
This plug-in is great, with so many presets available for both guitar and bass. I am still learning how to dial in certain tones with it but for the most part I really enjoy using it, both with Logic and on its own.