We've been to Planet Hollywood every time apart from the last one and always enjoy it, a few years ago it smelt bad(so did sports bar) but when we went back for our next holiday it had gone in both.
Rain-forest was good and had nice theming but the wine(white) was terrible.
We've never eaten at Ludwig's but usually get happy hour drinks there!(we almost ate once but they took so long to take our order we left! - not something we usually do)
Steakhouse and Walt's are both VERY good in out opinion and we like Billy Bob's for a snacky lunch/dinner while watching the band.(haven't had the buffet - yet)
Also enjoyed the buffets at Hunter's Grill, Inventions and Parkside Diner. Similar food except for Inventions which is better!(we went at 2:30, no characters but cheaper)