I just purchased a Salsa Vaya yesterday.

Was wondering what you guys think about the rear racks. Does which one you buy really matter?

Here are some that i have seen...

Salsa Wanderlust - $99
Topeak Explorer $59 (If i choose this one, do I have to get the 29er or will the regular one also work?)
Bontrager Backrack Deluxe L - $49



Obviously looking for the best configuration, functionality, ruggedness, weight, etc. Any suggestions?