Audio Research 300.2 Comments Please

Hi folks. Interested in your thoughts on the 300.2 from Audio Research. I'm in need of a high current and high damping factor design to drive some new speakers and I'd like to stay in the ARC family. I've got a 150.2 in my system right now on loan from a friend and it sounds pretty good but I'm wondering what might be gained by going to the next model up. Preamp is a SP16. I'd particularly like to hear from folks who were former owners and sold due to shortcomings or from people who have some experience with other solid state amps in the ARC lineup as a point of comparison. I like the fact that the new models run cool but in the end I'm hoping for performance which exceeds my old 100.2 (which is tough to beat) but with more low end control and superior dynamics. Thanks for your time.