I have both and have never seen any evidence that the f/2 is "never sharp". That said the 2.8 has
nothing to apologize for; it is magnificent. The 2.8 might be a bit sharper at 2.8 than is the 2 which can help if you shoot wide open a lot but it stinks at f/2

. The 2.8 is also smaller, lighter and usually a lot cheaper. F/2s are a lot sexier than 2.8s. Don't think this is not a factor here; 2s are going up in price because people are buying them up.
If you are really flush I'd get the f/2 because you can always get a 2.8 later. Otherwise, the 2.8 is the better choice in every case unless YOUR photographic needs require the extra stop for exposure or your eyes need it for viewing or you don't want/need/care about maximum lens resolution. Either one delivers for Tri-X and that is what I shoot. I never pay attention to tonal or color qualities because Nikkors have never given me any reason to complain about them. Either one, enjoy!
s-a