Chainsawrepair, here is the 550xp IPL
, but the 543xp one isn't out yet, as far as I know.
Regarding the other saws, anyone can look on the US Husky site, if they are availiable - most IPLs since 1972 can be be found there, which is a great service!
According to the Scandinavian user manual, the 550xp is 2.8 kW/3.8 hp and 4.9 kg (10.8 lbs). The 545 is 2.6 kW (3.5 hp) - same cc and weight, as with the 555 vs. 560xp.
The saw looks like a "crimped" 560xp - and I am wondering when there will be an "enlarged" one - logically that should happen, but who knows when?
No TORX, I am not going to buy the 550xp right away - the 346xp obviously is much more difficult to improve much upon than the 357xp was. My 560xpg feels like a real improvement though, and I already have one of those - just not able to use it right now.