Absolutely! I'm currently on the 50/60/70cc plan myself with the 261/6401/Stumpbroke 372xp, but the 6401 oiler is D.O.A. currently, so it's the 50/70cc saw plan for me. There WILL be a 395xp in my future though...
There's always a need for the correct tool for the given application. Few of life's problems can't be fixed with a 1911 or some Semtex, but they're not ALWAYS the right choice!
To Dave,
Don't let the size thing fool you. my father and I bucked about 2 cords of white Oak and Hackleberry push-downs today in a neighbors wheat field. As much as I love my Stumpbroke 372, I mostly ran the MM'd 261 w/a 16" bar running 3/8" round chisel chain. I had the bar buried in some 20" trunks and it just kept pulling. If my saw will do this, and from ll accounts, the 550xp has more grunt, then you'll be quite happy both from a weight and performance standpoint. I haven't had the opportunity to run any of the auto-tunes, but know a few fellas on here and their individual thought processes. I trust them on their word and if they are this enamored with these saws, there's a reason for it. There very well may be a 550 or 562xp (or both) in my future as well. I still love Stihl and am very impressed with the Dolmars, but the Huskies continue to grow on me. I know the $$$ thing is hard to swallow ( you should have been next to me while I watched my '01 F-350 holding a MS660, 039 Sthil, 346xp and 55 huskies and much support equipment for fire wooding go up in smoke), but it really is a long term investment towards energy independence and self-sustainment. Any hard-working Man, Father or Husband should be able to appreciate that, it's just the communication of these principles to the "better half" that can be a bit confounding. Good Luck!
You're not in the mid-west are you?