I think the best color is blue.
Seriously though...
If you can't drive a manual, the best transmission for you is the automatic.
If you hate paddle shifters, the best trasmission for you is the manual.
If you like changing gears with a clutch, the best transmission is the manual.
If you're not an expert driver and want to go as fast as possible, the best transmission is the automatic.
If you think manuals are more fun and you want to have fun, the best transmission is the manual.
If you'd like to worry about an automatic transmission overheating on the track, the best transmission is the automatic.
If you bought the car already, then whatever you got is probably the best.
You're getting a sport package so you'll get the LSD. If you're going to upgrade it to aftermarket, people seem to love the Quaife and Carbonetic options.