Help on Swiss Luxury, Alan Furman and DeMesy

[bchan]

Hi all.

Well I am getting close on making my first Rolex purchase. I think I have narrowed my search down to either an older GMT Master II 16713chser or the new 116710 in TT.

DeMesy has both as used watches for about $7k.

Swiss Luxury has the 116713bk for $8k cash or $8.4 credit card

Alan Furman has the 116713 for $8.4.

Can anyone tell me if these Grey Dealers are reputable, and which would be best to buy from. Also is there a very strong advantage to buying the new 116713 vrs the older 16713?

Thank you for all of your advise to date.

BChan