Salut! Fellow Montrealer - ok - so I live near T.O. now, but my heart is still there! (Except for the traffic jams on the Metropolitan!)
I've stayed at many of the resorts, and as fellow disboarders have commented, OKW is spread out, with old Florida decor and architecture. I really enjoyed it. Any of the buses we ever needed were always quick. We were near the second bigger pool, and loved the atmosphere there too. The main pool is often short of chairs, although they are working on that. For 'ambiance' it is much much calmer than all the other resorts. DTD is so easy to get to, for many more activities beyond the standard resort activities. It depends on the varying ages in your party.
Inside the rooms, there is a sense that you're getting more "elbow room" too, and storage room....less apparent with the studio of course, but I've noticed it. More than in most CSR, or CBR rooms. If there are more than 2 people sharing a studio, that really helps with the crowded feeling. It also has a real relaxed-vacation feel to it - somewhat like CBR. I'm not sure if that's due to the layout of the resort, or some other factor. I'm not 100% sure, but I believe you also get a private balcony, which you wouldn't in a moderate.
As other posters have written, there are limited choices for dining. With DTD so accessible, they must have factored that into their decision. Having said that, Olivia's has very decent food, even if it isn't necessarily "gourmet." I'm very sensitive to "fast-food" type preservatives, and additives, and didn't have any troubles there whatsoever (neither did the diabetic in our party - sufficient variety on the menu for us - better than most moderates). For special meals, we head to Epcot anyway!
Enjoy your planning - that's 1/2 the fun!