I recently replaced my 2008 Ultimate 14.5 Solo with a new Ultimate FX12. At 77 years young my aging back had gotten to the point of rebelling a bit whenever the 14.5 had to be lifted onto my trailer or transported to the water. The FX12 is a perfect boat. After being accustomed to the longer Ultimate I was a little skeptical that the shorter length would seem squirrely and that has not been an issue at all.
I am really impressed by the hi/low seat and the ease in which it can be removed for transport. The under seat tackle tray holders are so easy in keeping gear close at hand. I use one for casting tackle and the other to house my fly gear. I purchased the optional front hatch cover which is a great addition to the kayak both in looks and keeping spray out of the forward hatch area. The versatility of the anchor trolleys and gear tracks are a great improvement over those that I had to add to my old Ultimate. I did add an additional short section of Yak Attack track for mounting my VisiCarbon flag/light mast and am considering purchasing a waterproof bag for the rear open area to house all of the additional gear that I like to carry with me just in case I need it.
I may be a little biased because of my previous Ultimate ownership and the fact that both my Bride and daughter also paddle Ultimates, but I am convinced there is no better kayak available for general all-round recreational and fishing use when comfort, stability and flexibility are taken into consideration. These are great boats!