I think you bring up a very good point. I don't bag anything so the 29 EFI is fine for what I do. But you're right, if you're bagging, you might want to get something with lots of a$$. Are you saying that you're cutting stuff that is so thick, it's bogging down the 34 Kohler? I can't imagine. I was running that demo 34 into some really thick stuff and it didn't bog at all. Also, do you happen to know what the gph is on your 34?