Die, manual boy, die!
The time for a downshift by the auto is approximately the same time as doing the same thing on the manual....it just seems longer because you aren't doing any work but waiting.
And you can manually shift the auto to make certain you stay in a particular gear, if you want and have a 13+.
2014 Premium GT, SGM, Brembo, Auto, Tech, Comfort, etc. GT500s, Steeda UCA, VMP auto tune, 100 shot on BBR tune, best et: 11.38 at 120.85
2012 GT, Candy Red, Brembo, 3.73, Tech, Comfort, etc. Procal tune, Roush upper, UMI LCAs, Steeda red bracket, GT500s, 28X10X16 Hoosier slicks, best et: 11.91 at 115.23 RIP