i'm your size too exactly.
I've skied K2rictor in 167, "older" blackeye in 164, rtm84 in 171.
I think they all should be great skis.
K2rictor should be able to be found cheap since it is a couple years old, and cheap to begin with even new. There should be a pretty good used demo supply of them too (keep an eye on powder7).
I personally am thinking of taking a look at blizzard 8.5 next year in 167
My advice is length is important as you said you were looking at 170 or 175 which is 1 size higher then what i am looking at. The rtm84 in 171 was too long in terms of I couldn't get enough weight into the edge to keep it in the carve versus skipping out, compared to the other skis I tried. I dunno, only 4cm longer than the rictors so I would've thought it shouldn't have made that big of a difference.
So really do take that into consideration and avoid making a purchasing mistake of getting a ski that is too long. I don't have any ego in terms of thinking getting longer ski means i'm more expertz.