It seems as though the 394 and 395 are to husky what an 064 is to 066/660 of stihl. With the 395 it seems to my very uneducated thought compared to builders, that an 084 is closer in size and speed meaning they're not really about speed and agility as straight power to pull long chain. Again very uneducated here. Then the 394 and 660/661 are in there with capability to pull 42 and 48 inch bars can have speed depending on the users goals and plenty of power. A 390 is an animal all it's own and can test the mettle of a 660 with its speed and power. The 064 I feel is the 390 to the 394 or the 394 to a 395 in that the decrease in power transfers into speed with each model below it. I know there's variations in there with bar length, chain, # of pins on rim..............I'm thinking in terms of for example an 064 and a 390 can run up to a 36" b/c if a guy is careful, a 660 and 394 can run up to 48" carefully, then your 395 will handle 50 to 72 inch carefully. For racing saws I have no clue at all because all the builders here make a mean SOB in your favorite model, which again as mentioned is personal preference ultimately. You have to figure if you like pack in rocks, or itchy hands, drag racing speed, or whatever. I'm a stihl guy but I wouldn't turn away any husky in this category either