Those are just boot times. :P
Your motherboard and it's various controllers will influence boot times far more.
As for the bracket, ask the retailer if it comes with one, my OCZ Vertex 2 came with one, so did the Samsung 840 Pro in my other system, albeit that was not an OEM drive. (OEM one's come without a bracket.)
But it seems you have made your decision anyway, so have fun!
--::{PC Gaming Master Race}::--