I have one in .177 and I have to say I am blown away by the accuraccy
AND precison of it!
Let me explain what I mean by that, but first consider I have 4 Redwolfs (3 in .177), FX Crowns .177/.22 AND Anschutz 9015 in .177 so am no stranger accurate guns.
Back to the first bit, what I mean is that have no trouble shooting very small groups with all the above rifles, however I always seem to experience slight wandering of the POI and I have unlimited access to a 25yard indoor range with bench etc. etc. so shooting conditions don't change.
What struck me the most about the Steyr is that is able to put pellets consistently in the centre of the target with no as yet POI shift obvious, I cant say if this is down to the way the barrel is secured/floated or held, but most other guns dont seem to do this.
See group below!
What also strikes me is that the holes are very clean (JSB Diablo), this must have somethng to do with the way the pellet is travelling/stability?
Downsides are the gun is heavy compared with others, very loud as above, Steyr advise
do not thread the barrel as you may stress relieve the hammer forging and affect the choke, pellet loading is a bit fiddly, I don't like fill probes and shot count is poor if you are used to a bottle gun, trigger is brilliant though!
I am sure you won't regret it if you buy one and yes the only differences are as you say in your post.