all right guys, i'm going to buy a smaller bar for my 440 magnum. right now it has a 25 inch bar on it as that is how it came from the dealer. it is quite the beast with the 25 on there and i am wanting something for smaller average size trees that i cut. i think 18 is a good universal size, but is that too small for the big beast? should i just go with a 20inch? what do you guys think? also, does anybody know the best/cheapest place online to buy bars?