Sean--Welcome to EpicSki!
I want to apologize for the rude welcome you've received from some of our community. It's a big bunch, and there are all types....
Regarding your ski question, I'm going to suggest that you'd be better off ignoring the brand, and considering skis based on their specifications (width, sidecut, camber) and characteristics of flex, shape, weight, and so on. Keep in mind that any "all-around" general-purpose ski is going to be a compromise--probably not ideal for any type of snow or type of turn.
When you say you want something "quick-turning," that can mean several things. Unfortunately, a ski that is quick-turning on hard or groomed snow will be quite different from a "quick-turning" ski in powder and crud. On smooth snow, the quickest turning skis are shorter, narrower underfoot, and with deep sidecut--ie., a slalom race ski, meant to carve short-radius turns on hard snow. For you, the ideal slalom-type ski would be around 65mm underfoot, probably 155 cm or so, with a sidecut of 10-12 meters. But that same ski will be too stiff--especially at your weight--and too narrow and short to float and bend and shape quick turns in light powder. There, the ideal ski would be at least a little wider (75 mm and up underfoot), a little longer for fore-aft stability--say, 165-175, quite a bit softer so it will bend easily in soft snow, and probably lighter than a race ski (although some people, like me, don't mind a heavier ski that doesn't get bounced around so much in crud).
So it's your choice where on that scale of compromise you want to go. My recommendation would probably be a little narrower than the skis you've described, because if I could ski only one ski, I'd rather ski a carving ski in powder than a powder ski on ice and groomed snow. In the Hart line, which I am most familiar with, I'd look at the "Pulse" (124-77-110, in 162 or 170 cm) for a great carving/groomed snow ski that is more than capable, with good technique, in soft snow, moguls, and trees, or the "Attack" (120-84-110 in 167cm, or 123-86-112 in 174cm) for a ski that will work well in all conditions even without highly refined technique, although it won't be quite as much fun carving short turns on hard snow, or the "One" (130-94-120 in 166cm) for a ski best suited to powder and crud, but still OK for carving on groomed snow.
From your description, it sounds like the 84-94 widths might best suit your purposes. The Hart skis (Attack and One) in this category still have a sidecut radius in the 17-18 meter range--not slalom skis, but short enough to make reasonably tight turns with relative ease on the Deer Valley groomers.
So, if I were you, I'd go try some skis in this range. At your lighter weight, look for softer-flexing skis. I wouldn't pay much attention to brand recommendations from anonymous skiers on the Internet. But go to the shops, pick 'em up and flex 'em, get the specs from the sales people, the manufacturer web site, or elsewhere. See if any ski or brand just "feels right" to you. See if you can demo some of them (try to ski them in a variety of conditions, if possible). Remember that how the skis are setup--what type of binding, where it's mounted, and how the ski is tuned--will have a big effect on the ski's performance and feel (much more than the name on the topsheet!).
Don't forget, too, that the right boots and setup are more important than skis. And how you use them--technique and tactics--is more important than what ski you're on as well.
If you can afford it, some time with a qualified instructor would be ideal. You'll get more specific recommendations based on how you actually ski, along with some ideas and practice to make sure that your technique takes maximum advantage of whatever ski you choose.
Good luck, Sean. And again--welcome to EpicSki!