I've had a Colgan T-Bra for about two years now and am quite happy with it...heavy duty construction and good fit. I use it primarily on road trips. I've had Colgan bras on my last five rides and still have one I use on my truck that is 14 years old (it keeps the kayak straps from rubbing the paint off the front of the hood). Bought the T-bra for the xB because the sport bra I had on my Honda Element used to lift at hypersonic highway speeds. The T-bra lifts a little bit, but is much better.
Avoid the LeBra (if they still make them). They're cheap in every respect.