you'll learn more. Most of the known vendors on this site have the 740's. The reasons to make the move are basically these: 1. Cost is close. 2. It is necessary if mods are added. 3. There is no disadvantage. If you are absolutely sure you'll keep the car forever and will never want to add mods, then stay with 370's, but who really knows that? IMO, now is the time to upgrade.