I have never used them, but I have heard they are the best and most expensive in the US. I doubt they will do anything regarding R*lex, except refinish a gen dial. The very best dial refinishing company, Southern Dial, in Texas went out of business. They were the best I have seen and the Swiss Watch Technical Center put me onto them several years ago when I was restoring an Omega Constellation.Don't know who they use now, but it would be interesting to get their input on where to send a watch dial for one of their brands.
I am also interested in hearing about Kirk Rich Dial Company in California or any other dial refinishing company that does really good work.