I've been running Caroni RFM's since 1990 (along with a couple LandPrides along the way). Very happy with them. Bought first 60" side discharge new and still have at least part of it

It was used really hard, stored outside most of its later life and served as a bush hog when other decks came along A few years ago I bought another abused 5 footer and made one good 5 footer from the two. Then with next tractor got a 5' side discharge LandPride and then with the bigger tractor got a 6' rear discharge LandPride.
When it was time to go a little bigger, I bought a 7-1/2' Caroni for the L4240 that was very used and restored it. That was in 2018 and it is still doing well. At present it's upside down on sawhorses with a fresh coat of paint on the underside.
The weak link on the larger decks would be the wheels and yokes. I've bent some by swinging the deck into the edge of the road or sidewalk. This also happened with the LandPrides. I was able to straighten a few over the years. At the same widths, the Caroni decks are lighter than LandPride. They're not flimsy, but the lighter weight is handled a lot easier by smaller tractors. I had a B7500 / LandPride 5' and my Ford 1210/Caroni 5' for a 10-year period and both worked just fine. Out of curiosity I traded decks and the Ford really struggled with the LandPride.
Caroni has come out with a new 7-1/2 footer that is a bit more robust (larger diameter yokes) that would be easy to become interested in. As mentioned, Agrisupply has parts. Also found slightly heavier replacement wheels/yokes online.