Of all the presses out there, I'm wondering what drew you to the RCBS RC and Summit? Just curious.
I replied as my reloading is with pair of Dillon 550 presses for the bulk of my reloading. I had a Summit and although a well engineered press, I found I didn't use it much. Honestly it seemed that it was permanently set up with a LEE lead tester in it. I needed some room on the bench so it was sold. Not because it wasn't any good, but because I didn't use it much.
The press I use for really tough sizing is a Redding Ultra Mag. I use the press for depriming mostly and for testing lead hardness. I have it set up with Hornady quick lock bushings. Advantage being it has great mechanical advantage, and the primers drop down the center of the ram and out a tube.
For me, a press should spit the primers down a tube. That takes a whole lot of crud out of works.
I did buy a LEE Classic Cast, but I really don't like it. Ram alignment is an issue, and the compound linkage is rather crude.
For my money, I'd vote for a Redding Big Boss II
I've owned a RC, one was enough for me, ram alignment was very bad.