Being that I am new to hi-end audio gear, I have a question? I am looking to buy ML spires used along with other equipment for my first great system. There is a listing on Audiogon for brand new in the box ML Spires. My question is this....How do you know if these speakers or any other equipment is hot, stolen, or otherwise? I have noticed many listings for "new in the box", or "used for only two weeks", or " selling for a friend".... Any advice would be greatly appreciated..... Thanks, Mike