Al, you're certainly the go-to guy when it comes to Omega! I'd be curious what other brands you get on a regular basis, perhaps with the exception of Rolex which I'm sure you see often as well. It'd be interesting, too, to see the vintage restoration jobs you receive.
For modern watches...off the top of my head...Omega of course, Rolex, Panerai, Sinn, Doxa, Breitling, IWC, Oris, Tags. And there are a whole bunch of brands I only see a smaller number of like, Chronoswiss, Fortis, Ball, Kobold, Longines, Tissot, Stowa and more.
For vintage, a lot of the same brands in some volume, so Omega of course, Rolex, Doxa...but the spread is larger with vintage as someone digs "brand X" from grandpa's drawer and wants it serviced...so there is even a greater variety of watches that I only see a few of. So again just off the top of my head Bulova, Longines, Gruen, Girard Perregaux, Universal Geneve, JLC, Tudor, Benrus, Patek, various pocket watches, etc, etc, etc...really it goes on and on...
Cheers, Al