Of the one's I have dined at:
Artist Point: very good, but I loved the buffalo steak which isn't there anymore. Now it's buffalo short ribs, gross. AP does hold true to it's host resorts theme though, Wilderness Lodge, there is a bit of game meat such as venison and boar, for me it's fine because I always wanted to try these things and I was not disappointed. It's not in the plan for this year unless they bring back the buffalo steak... if not, it'll wait until 2010.
California Grill: the food was good, I always love a place that says yes to "hold the mushrooms" and they did from my goat cheese ravoli. The server we had was the best of all the WDW servers we've entcountered, only the AP server could come in a close second. And I love that they are used to delivering meals around Wishes.
Narcoosssee's: this is my favorite WDW restaurant. The service has never disappointed, the food is wonderful (especially the dessert), it's the most gorgeous restaurant imo (go when it's dark if possible), it's best when coming from MK... just take the short GF boat ride and you're there.
Jiko: the only signature I don't plan on returning to in a long time. The food was ok, would have been better if I didn't waste 2 TS pp on it. I am a cook medium steak eater but my mom likes it well done... it was burnt. It's really ashame because this was the restaurant I was really looking forward to trying.
Yachtsman Steakhouse: the dessert here is sooooo good. I like the feel of this restaurant, it's very welcoming to me (minus the little steak room). The staff is nice, the patrons are much more professional as is the resort and they know their steak here. Plus they have a good bearnaise, which I love.
Hollywood Brown Derby: if you're not looking to get the most bang for your buck, you'll enjoy HBD. I say this because the prices are overall the lowest for a signature restaurant. It's pretty good and worth it especially if you want to utilize the Fantasmic Dining Package.
I can't comment on Citricos or Flying Fish until October 2009 since we'll be eating there during our next trip.