I will have to make a video of the 550xp I got back from Kevin. It's a ripping little monster now, and about even, or maybe a touch faster than my MMWS346. Either way, both are keepers, and if I run the 261, it's simply to run it as it's a fine tool, but not the same.
I did recently score 2100 Husky, that with some Love, should be a great saw. I may still have Kevin build me a 395xp though, albeit with the 2100 and the 660, I don't "need" one... If Husky would hurry up with their 59_xp, I might change my mind though.