I could well bust a forum rule here 
Repique cited Ebor and I have to agree Nic is great guy to deal with and the wss figures are pretty damn good in my opinion.
Teresa at OG in the US is a bit of a legend, she seems to get on top of things quickly if you have a problem and stays there, always deals with emails promptly. Worth her weight in cocky shit (that is a compliment in our part of the world).
I really liked dealing with Frank of Minden fame.. he was a grouchy ol’ sod at times, same as me so I just gelled. I hope he is doing well nowadays.
Plenty of others probably fit the OP but these are just a few off the top of my head, occasionally I have had less than joyous dealings with a few suppliers but I dont think there is any call to name them (TWW isn’t like that other place), if they don’t measure up, even after I have tried to explain, then I will not use them again irrespective of the quality of the product.
I've learned that people will forget what you said, people will forget what you did, but people will never forget how you made them feel
Slowly Over A Low Flame