New to site. looking for recommendations. I cut about 10-12 cord a year to heat my welding shop. I can sharpen with a file and have been doing so for over 20 years. Trouble is some of my welding customers are dropping off chains for me to sharpen. I'm considering buying the Stihl USG, Maxx or Oregon. I'm willing to spend between $300-$500. Looking forward to your recommendations and your reasons why. Thanks in advance.