I had the 13sho non pp,braannd new for 2 weeks and then traded it in for the car that i have now,the 13 SHO PP,everyones opinion varies here and each to their own,but to be honest with you i noticed the 13 pp sho was quicker in 1/4 as soon as the salesman gave me the key to test drive it alone,also the 13 pp the engine sounded,louder,meaner,thats only my opinion,since both cars were brand new and no mods.