Shaw v Fyfe v Goldstein v Lids
With my current side/structure I can afford to select the highest priced player from one line. Who would you choose?
Fyfe is the only one I have seriously considered, as I'm happy to miss all the others at their price. The problem with Fyfe is that he's not yet fit, and he seems to always miss games. Given he can be such a high scorer, he has the potential to look quite overpriced in a PIT sense (you're paying 124, but might miss out on 44 points x 4 games, say). For a 110 player, the missed gameswould be less costly.
The main reason I've considered Fyfe is that if you ignore his missed games I think you can make an argument that he's actually underpriced due to being not fully fit around round 15 or so. I don't know that that many others agree/have thought much about it, so he could actually be a cheap superstar POD, which is probably quite a rare combination
You'd be backing him to (1) miss fewer games and (2) maintain his (uninjured) 2015 form though, which is obviously a big call. Brownlow winners almost always regress.
My other comment would be that you needn't feel like you need to spend your cash on one of those four just because you can. I suspect you could probably strengthen one of your other lower quality keepers (M8 or perhaps R2 types) to get closer to your ideal final side without overpaying up-front.