Excellent post sekrah which sums thing up nicely.
I was leaning toward using Dullahan for the reasons explained in my earlier post, but all I heard yesterday from the CD clockers was how poorly he's been doing at CD, as in changing leads at the wrong time, profusely sweating during gallops, etc., so he's off my ticket, which leaves me, by process of elimination, with Hansen, Rousing Sermon, and Daddy Nose Best.
Given the weather and his off/distance pedigree, I guess it makes sense to substitute TCI, but whether it's the fact that he beat me out of a big score in the Fla Derby or the fact that he seems to need a lead he isn't going to get, I'm having trouble not thinking that he's one of those horses I'd be using as insurance against the idea of feeling stupid if Calvin rides the rail and does it again.
So, again using the process of elimination, I'll probably use Gemologist for no reason other than my theory than until a horse loses, it's hard to say for sure how good he actually is.
Good Luck.