Having recently tried the backhoe method on a few trees, I have to agree. Yes, you can take down trees that way - I did it with the root ball still attached - but I figure it's one of those percentage things. The odds can be 99 to one it will fall where and when you want it, but the one time it surprises you may be the very next tree you work on. Those are not good odds to be risking your equipment and your life, so I'm sticking with the saws, wedges, and if needed, 100+ ft. of log chain.