The 500i is junk unless you get it ported, it's lightweight but uses a ton of fuel, and filter gets dirty quickly and if your wood is really hard and cuts powdery if dry it'll get inside the carb.. it's also awfully expensive.. for that price I'd get a 592 and call it done, 592 makes gobs of power and if you can get around the weight difference it's great. Tank of fuel typically lasts twice as long as the 500 (or more) and filter is much better. They had issues at husky with the 1st years saws but they've been fixed. Even a ported 572 or 372 puts out more power than the stock 500i and costs couple hundred less all told. But if money is no object and weight is top concern gotta get that 500i ported if that's what you choose (or try it with the 400 first they gain real nicely) just my 2 cents as I own a 550xp 572xp and 592xp and have ran the 500i both before and after my cousin had it ported.