I'm debating between buying a new DB751, or a mint condition DB750 from a friend. The DB750 would be half the price of the DB751. I've played a 750 before and really liked it. But my question is, do you think it would be worth it to drop the extra money on the 751? The cost of the 751 isn't the issue. So with that aside, if you like the 751 better, do you like it substantially more than the 750? Enough to justify spending the extra money?