You read right, but I don't have 35 sets: I make 35 calibers from about 28 sets with a few stand alone PF die add ons, and in other cases I use the CSW die of another set to make cores for 2-die sets without one. One thing nice about having lots of die parts: you usually can find an external punch that will work for the project at hand.
I've received a few things from RCE during these last 3 years, such as die body replacements, JRDs, and a few punches. I may even have bought a whole die set from him... it's hard to remember. Richard (RCE Co) used to work for Corbins before 4 years ago as their master tool maker, and part owner. Most of the items I have from Corbins, therefore, are probably his, or turned out under his supervision. So, it would be impossible to compare what I have, but I'll make this observation: Richard continues to develop... to improve... the tooling. Corbin Co has a very fine product, but hasn't come out with anything new in the basic swaging line for some time. It's "S-Press" was the latest improvement. But, its line is much larger that RCE's. (Corbin does announce new auxiliary products from time to time). One thing for sure: Dave Corbin's books on swaging can't be beat and are an absolute must for your library. Today, if I was starting out, I'd most probably go with all RCE equipment as much as possible for the pricing. The quality of both companies are the same. But, always remember, Corbins is a firm with several workers and lots of assets, but RCE is one deep, and both Dave and Richard are no Spring Chickens. I don't think there's been a bullet swage tool and die firm yet that has survived past one generation. This is real important when you start investing in $6,000 presses and $400 die sets