Both of those presses are good. Of the two, the RC will work with the Hornady LNL conversion kit, to use LNL bushings on dies for a quick 1/8 twist and remove/install. The Lyman press is not compatible with LNL.
However, you should probably also look at the Lee Classic Cast single stage press. It is compatible with LNL conversion kit, and has through-the-ram spent primer handling, which the others lack. Without it, you will get spent primers and debris all over the press, the bench and the floor. The LCC also has a fully adjustable handle, and at a great price (less expensive than the other two). I'm not a fan of some of Lee's products, but this is a good one.
Other examples of presses that have through the ram spent primer handling and LNL compatibility are the Redding Big Boss II and UltraMag. Both are more expensive than the ones you are looking at. The BBII doesn't really offer anything that the LCC doesn't, and lacks the adjustable handle of the LCC. The UltraMag is great for longer magnum cartridges (longer than standard magnum length).
Finally, also more expensive than all the above except the UltraMag, the Forster Co-Ax has through the ram spent primer handling, and it's own quick change die retention system that does not require additional bushings on the dies. It has several other advantages for both accuracy and ease of use.
Andy