If they are out in the open get the 650 (usually about $49.99) on sale. If in a cupboard the best bet is the Smart Contro (I prefer 900 bit its discontinued). Personally, I don't like a Wifi remote like the Ultimate and Smart. If you have a "flaky" connection with the router, you have problems. My 650 and 900 don't depend on Wifi connections. Just my opinion.
Any cheap learning remote like the RCA RCRP05BR ($8) will also work, if you still have your Rotel remote to learn from (or get a JP1 cable). Very few cheap remotes still have those old Rotel codes built in. Harmony does have Rotel codes of course, probably URC too, but they can get expensive.
A forum community dedicated to home theater owners and enthusiasts. Come join the discussion about home audio/video, TVs, projectors, screens, receivers, speakers, projects, DIY’s, product reviews, accessories, classifieds, and more!