Demo/borrow as much as you can. You're welcome to take mine for a spin. I'm at AM most weekends.
I'm on my third season of Moment Tahoe's. 188. Center mounted. (I get a little jibby when I can.) I'm 140lbs / 5'10". They're light. My older wimpy legs appreciate a light ski and binding setup to hike all the goods. They're my one ski quiver for Alpine Meadows/Squaw.
That said, I also have a pair of Moment Comi's. They come out on powder days. And they can carve hardpack, but two days of a lot of carving on them wreaks havoc on my knees. That's why the Tahoe's come back out a lot at noon. That said, they chatter a little on ice - but that's less than 10% of your turns. Why anyone buys skis that perform well on ice in Tahoe is beyond me.
If I had to just have ONE tho' - it would be a toss between the Moment Ruby or Tahoe. Probably Tahoe 'cause they do everything except float as much as the Ruby or Comi on a powder day.
I did try the Moment Nightrains - but I'm not certain I'm ready for the rocker thing.
Kbuzz beat me to it, but i was gonna mention that Moment has a ski curiously named the Tahoe, which they claim (due to its name) is the perfect 1-quiver ski for the area.
not sure if they still do it, but you used to be able to call/email Moment and demo their skis for free (you just had to swing by their shop in Reno).
i also ride with a number of folks who swear by the PM Gear Bro Model as the perfect 1-quiver ski for the area.
Also the Fischer Wateas look (and feel) like a solid ski (I am itching to demo the 101). Seen a number of instructors and racers on those when they are freeskiing and have heard nothing but positive feedback from those who ride them.
Me, I ride Lib Tech NAS and they've worked great for me as my all-arounder here in Tahoe and also in Colo. But I'm a sucker for Magnetraction...
bringing up Moment and PM Gear caused me to also think of Praxis. All 3 of those companies are based in the Tahoe area (Moment & PM Gear in Reno, Praxis in Truckee) and are run by folks who ski the area religiously. I would check out their skis if you can since they are made by locals with the local conditions in mind. Just some food for thought if you wanna be a "Slow Skier" so to speak (i.e. buying and skiing locally).