At your size, you don't want a Super Fun, you should compare the 4 Fun to the appropriate size EZG. I've paddled a Super Fun for 2 years, and it is a great river runner through class IV, but I weigh 225. At 200 lbs, you would not find it that easy to throw around.
I have not paddled an EZG, but from all accounts, they are top notch. I don't think you can go wrong with either choice.
If you are looking at a Jackson boat, you might want to wait and buy a 2006 model. The new boat armor outfitting looks to be a pretty significant improvement. CKS should have them in stock this month or very shortly after.
Another other possible contender in this category that may be worth a look is the new Liquid Logic CR series.
No matter which boat you get, add a Jackson Happy Seat. It is a great "fit enhancer" and will help improve your boat control in any boat.