Why do they even make the 550xp when the 545 is so much less and the only thing it's lacking is rev boost pretty much. Huskys lineup is so confusing... They should just call all there mag case saws XP's. I mean they make the 543xp and it's 500$ msrp and a 545 is nearly 100$ less and it seems as if a 545 would cut circles around the 543.......I can't believe I was actually considering it. And anyone who says the 543 is much lighter.....well it's not, the 543 is only .8 pound lighter....