well being i just went back to a 14-42 from having the 13-42 i can tell you for the rideing i do i dont like it as much as the 13. i ride mosty trails and coal hills. now i can tell it dosnt pull as hard, but also when i raced with the 13 the rear tires spun alot more, i have alot more top end now compared to the 13 as well. this is just my opinion i liked the 13 alot mor. and also stock is 14-41