J-Kid, this thread is very timely since I've been looking for a used sleeved TD longbow for awhile and Fox is one of the top candidates. I owned an Artic Fox TD some years back, it was too heavy for me but I liked its looks, in-hand heft and solid feel. Never shot a Tomahawk and have only seen one in the MOTB video with Dale Karch (TD model), but based on that rough comparison the Fox seems like a quieter bow. The Tomahawk TD design is interesting and looks dependable as well, but my experience with the sleeve was very good and they are a reliable system.
Fox bows are hard to find, especially the TDs, so buying new might be the only realistic option. From my experience it would be an excellent choice in a mild R/D longbow style.
FYI, I draw a tad under 28" and the Fox I owned was 64", which seemed like a good compromise for hunting and target shooting. Mine had a straight grip, which I like better than the locator style (must be due to my affection for Hill-style grips).
I'll be interested to hear more comments from those with Fox longbows, especially the takedown model.