Update on Sub-30m, 65mm wide Masters GS Race Skis
As stated previously, sport carving “GS” skis with a turn radius of 20m or less might be OK for NASTAR and Beer League, but they are not the best option for Masters GS racing, at least in the West. After experimenting with 67-71mm wide so-called "Masters GS” skis, many western Masters racers have ditched these wider skis and gone back to standard 65mm waist GS skis which have generally proven more effective for most folks. GS skis with a turn radius in the 23-30m range and waist widths of 65mm are more appropriate—although such skis are generally both more demanding and less fun for public free skiing than their sport carver cousins. Many of the skis in the category are Junior GS skis built to FIS specifications. Below are my experiences with several 65mm GS skis with radii above 20m and less than 30m.
Note that all of these skis have a 0.5/3 tune done by Start Haus, Race Place, or Peak Performance. Subjective hand flex of the ski is in comparison to the other skis listed here. The performance comments are based on and biased by my age, condition, skiing style, location, etc…
Atomic Redster G9 FIS Revo GS 187cm/26m (103-65-82): Soft flex. For me these are the easiest and most versatile option of these sub-30m GS skis. The ability of the X-VAR binding to easily shift fore-and-aft can be a huge advantage when dialing in the skis, as I tend to prefer these one notch forward. Turn initiation is extremely easy, even at relatively slow to moderate speeds. They have a large sweet spot and are relatively tolerant of mistakes. This ease of use comes with a bit less stability, power, and a lower speed limit than some of the other GS skis in this category. These Junior skis are a good choice for lighter skiers, while heavier folks might overpower them.
Dynastar Speed WC FIS GS 185cm/27m (102-65-84): Medium flex. These (and the identical Rossi twin) are the most lively among this category; quick and easy turning at moderate to high speeds, with superb rebound energy arcing from turn to turn. They are not harsh or demanding. These put a big smile on my face and are currently my favorite sub-30m GS skis. While purportedly Junior skis, these are fairly burly and favor heavier skiers; lighter folks might want to use the 182cm/25m version.
Head Worldcup Rebels i.GS RD Pro 186cm/25m (104-65-87): Stiff flex. These require a bit more effort to start the turn, but once on edge they are solidly locked to the snow like a Bullet train riding rails. They offer a very damp, firm, stable ride, with no discernable speed limit, but are less tolerant of user errors. Unfortunately, they do not offer as much feedback and have less rebound energy than I prefer.
Nordica Doberman GS WC Race 188cm/25m (approx 100-65-85): Stiff flex. These (and the identical Blizzard twin) are the most powerful and strong skis in this category, with spectacular edge hold and phenomenal stability at high speed. They definitely demand good technique to work well. In addition, they are more challenging when trying to initiate turns at lower speeds, as they strongly prefer to be going quite fast before dynamically coming alive. These are my second favorite ski in this category.
Stockli Laser FIS GS 184cm/25.5m (approx 103/65/84): Medium flex. As with most Stockli Lasers I have used, these skis became more responsive with the bindings moved forward a cm or so. They offer a smooth supple ride, easily blasting through hard ruts and ripples with aplomb. They are not as quick and inviting as the Atomic, energetic as the Dynastar/Rossi, as damp and powerful as the Head, or as strong and stable as the Nordica/Blizzard.
When I first got these skis, I was at Deer Valley getting my ticket one morning and noticed there were two other pair of the same skis I had in the rack outside of Snow Park Lodge. A couple of minutes later, two guys came out of the lodge, took the skis, and headed for the lift. Phil and Steve Mahre. I saw Phil in a lift line later that day and asked him "These sure are some awesome skis, aren't they?" Phils reply was, "Yes. Yes they are." I rest my case. 
