Any good speaker matches for the Onkyo M-510?


A friend of mine has an Onkyo M-510 power amp. I was wondering if anyone has any experience/suggestions for a good set of speakers to maximize it's performance.
No,but he is one lucky person one of the best amps made a real collectors dream. I don't remeber the issue from Absolute sound but harry Pearson reviewd the amp I sure he spoke of the speakers he was using.Google it.