Hi folks,
The 2007 edition of the Unofficial Guide gives Coronado Springs a B+ rating on things like soundproofing, lighting, and bedding. Caribbean Beach gets a B.
For overall room quality, Caribbean Beach gets an 80 and Coronado gets an 83. (Caribbean Beach still has those old school, noisy air conditioning units, and that's probably most of the differennce between the two). Those might be the two lowest scores for moderates, but no moderate got above an 84, so they're all ballpark.
Having stayed at every moderate in the last 12 months, I like Caribbean Beach's food court best. Coronado's got the best rooms. French Quarter's got the best atmosphere, and Riverside the best pool.
Hope this helps.
Len