I'm going to say up front that I'm taking Tate.
Both of these guys are very big (6'4"+ 215+) safeties with hype either nationally or within their conference. Tate had the better year this year, while Sands got his 15 minutes of hype last year after a big game against Pitt.
Tate reminds me alot of one Kerry Rhodes. Sands is probably considered the better leader of the two.