Re: Flats Fishing Dream Trip!?
Two places come to mind. Belize and Ascension Bay South of Cancun. Both of these places are very nice! Great local places to eat, etc. You will find upscale hotels as well as cheap stays for as little as 40 bucks. I feel you will get a lot for your dollar.
I know that the current prices for a guided trip in Belize right now are around $300/full day. I know you can't get a guided trip in the Keys for that much! I can't remember what the prices were for a guide in Ascension Bay. I'm planning to go to Ambergris Caye at the end of June. It's pretty hard to beat!
Good luck on deciding where to go. I'm sure you'll end up in a great place!