Never understood this mentality. I don't like to wait on the saw. A 70ish cc saw with a 20" 3/8 bar is one of the most common setups around here for frequent cutters. Im not saying a 562/362 wont run a 20" bar ok, but a 372/440/460/461 does it better. More torque, runs cooler cause it isn't being overworked, oils better, typically built better as well. Plus, the shorter bars have less cutters to sharpen. I'll run a 24/28 on a 460 occasionally if I need to but I usually just grab a 90cc class saw if I need more than a 20" bar anyway. Heck I run a 24 on my 395 and never thought it was under equipped.