I'd say a 3.5. I haven't seen many (probably not more than a handful) deer that are over 3.5 here in Michigan, and lots are on TV or the interweb. No doubt over a 2.5, but he doesn't have that brutish look of a 4.5, and also lacks the defining muscles (although he's certainly no slouch). Overall I'd say a small 4.5 or a pretty nice 3.5. Either way, he looks great for a deer in Jan... only 3 more months and he's back to feeding.