The Oppo PM-1 have a fairly high sensitivity of 102 dB/mW so the 1000 would most likely be WAY OVERKILL for me. I should be find with the 450 or 720. I wrote Larry Ho and he told me to get the 720 so I would have more flexibility in the future. Seems reasonable. I wonder how long it would take to get. Loving the PM-1 straight out of an Ipad right now. Can only imagine with the Geek Out.
Send me your PM-1 for a bit and I'll let you know how it sounds out the 720 and 1000. ;)