This is a comparision that I really need to make when the wood lines up, the Sawzilla 441 M-Tronic against the Sawzilla 460R. Two distinct different saws the way they run. The M-Tronic is a very catatonic SOB that seems like the jug wants to unbolt itself from the case and kick the S^*T out of the wood! The 460R pulls like a B&O Locomotive Engine, un-assumingly but fast. Can't say at this point which is quicker. But will tell you what I do know, when the 460 needs fuel or the filter cleaned the 441M is still laying wood on the ground and by the end of the day I have never seen a saw put out more production than this saw for it's 70cc size. The 28" bar is a perfect fit for either saw. Sure if a larger bar is needed the 460 may shine a bit more, but still by the end of the day, in normal circumstances, my 441M will prove quite a saw for 70cc.