Well I have been saw shopping for about a year. Well after burning up my little Husky 435 it is time for a real saw capable of cutting the 7-10 cords of firewood a year. I was looking at the 545 but for $60 more i opted for the 550xp. There were a few other options I liked more and the dealer didn't push me one way or another. He only sells higher end (non big box store) saws and for obvious reasons. I like my 435 and will be rebuilding it and using it for light limbing and clearing shooting lanes for my treestands. The 550xp seems like a nice saw and the auto tune already has it running way better in the cut than my older saws. I really like it and haven't had any issues. The dealer had me buy the 3 cans of husqvarna canned gas for the 4 year extended warranty threw in a scabbard and extra 18" chain. He offered to put any size bar and chain I wanted and was going to go with a 16" bar but he said that it would turn the 18 no problem so I went with the 18. I bought a 16" bar to run the 16" chains I have from the 435 but either way. I didn't some killer deal but paid $570 for the saw, extra chain, and scabbard. I only run non eth and husq premium oil through all my saws so I am hoping this saw will last a while.