I see more guys with Echos I think than anything else. I've got a troy built $125 trimmer that works well enough, but may have a lot more vibration than a more pro unit. I wake up with numb fingers often and sometimes have some aches. The salesman told me that the $200-300 commercial grades have almost no vibration in comparison and are much better for your nerves and less likely to ever cause corpal tunnel or nerve damage. What do u guys think?