i gotta be honest , i havnt read that much about the high comp motors exept the guys on the board who are using them , so i couldnt compare the 2 in a scientific personal experience kinda way , all i know is , im happy with 400 horses and low comp . i guess if i won the lottery and wanted the fastest cossi in the world i would pay the money and leave it to the tuner to decide , but as i havnt won the jackpot i,l stick wiv wot i know