You don't say where you are, geographically. Nor do you mention exactly where you'll be using it - whitewater, slow moving water, small lakes, big lakes, ocean... So who knows if you'll be best served by a 12' boat. Though if the answer is "all of the above", then a 12' boat wouldn't be too bad.
I will say that all those brands are second tier when it comes to popularity amongst kayak anglers, with the possible exception of the Heritage.
No way you can find a used Jackson/Ocean Kayak/Wilderness Systems/Native/Hobie? Have you tried looking at kayak fishing forums based out of your area? I know there are forums for the Northwest/NorCal/SoCal/Texas/Florida area. And that's just off the top of my head.
Scott
