I will be air-cooling my build, so I need the front to be mesh for better air intake, plus, I like how the mesh front looks.
I will say this, though, I REALLY wish Corsair (others too) would offer us a few options on their cases. If a case is sold with a solid front piece but I wanted it to be mesh, I'd like to be able to buy a mesh front piece. I'd also like to see different designs (rounded/squared) of the front offered. Or, if a case is sold without a side window, I'd like to be able to buy a side window for it. I just think it would be nice to have these type of options. I dunno, seems like a great idea to me.
Anyway, tomorrow is the 25th, hopefully the 450 will be offered for sell tomorrow. I am seriously considering it. Deciding on a case has been a kick in the kiwi fruits for me!