Welcome to RG, GFI3. If you really want to expand your collection into reps this is THE place to be. It's a big scary internet out there with all the scam rep sites. The trusted dealers here have a special relationship with the members and staff here, and you can feel pretty safe buying from them.

I've only dealt with a few, but my experiences have always been great.

I've bought from Andrew at Trustytime several times and he is VERY good to work with, and a real gentleman. Andrew has worked with me to find specific watches, and the ones I've gotten have always been flawless.

Also, you might want to check out WBK AKA WackoBirdKeeper if you are in the US. Stan (WBK) doesn't sell high-end watches, but the ones he sells are a VERY good value for the money, and he gets the watches to you unbelievably fast (I'm convinced that he has a StarTerk transporter hidden in his bathroom)

I'd also highly recommend ToroBravo. Toro is a great guy and has never let me down. He also has some amazing sales.