Nothing really ... What's one extra gear and 70HP going to do for you... Also... they both have the stock 2.5 pistons so add 5k to the purchase price!!!
He put it in off topic, probably was a good idea. Seriously, what are you asking? Here is a tip, read what you typed aloud before hitting send, if it makes sense, proceed. Want to know what kind yes sti wrx ok? Want a new subie.