I sold ephrank my M^3 amplifier. Both being in Sydney, he came over my place for an audition of the amp in question, bringing a fair few pieces of equipment I wanted to hear as well.
The whole thing turned into a mini-meet, with source, amp and headphone comparisons abounding, and us both discovering some new artists/albums to investigate. He was friendly, communicative, and a real pleasure to deal with.
Highly reccomended Head-Fi'er!