here's the way I look at it:
I bought some 189 made'ns this year. They are sick, but after putting 20 or so days on them, they already feel small. When I put on my park skis (which are still "fat" at 92 underfoot), I am afraid for my life, cause they feel so damn small. I am buying new skis that are 115 undefoot, basically just like the SFBs. I think that basically, you will get used to any ski that you ski on.
If you ask Eric Pollard, he will say that it's stupid to ever ski any ski that's skinnier than the sole of your shoes, which makes sense. Remember, he's about 5'10, and he skis on Elizabeths that are somewheres around 130 underfoot as his park ski.