Hunter,
I am assuming that your talking about the very top picture of the two decks that Vlad is holding. He has
PVD’s (They were originally called by the maker "Ground Effect's", but that just evolved to PVD’s by the riders) on that deck to the right. I bought a set of PVD's. They are good/great trucks.
But don't worry about having that kind of truck for slalom or think that you need them to win even a World Championship, YOU DON'T. Personally I think that if you set up some conventional trucks like the Tracker RTX's and RTS's, or Indy 101s, correctly with some minor tweaks (different bushings than what come stock, wedging and de-wedging,
straight 8mm outside diameter axles from Geezer-x, and a 1/4" longer kingpin, maybe even cut down hanger width) that conventional trucks can be as good or even better for many if not most slalom skateboarders.
What I have found is that if your not that great at slalom,
like myself (I am not great at slalom), that conventional trucks give you more room for error if you get off track than the PVD’s do. PVD’s are not as forgiving is my feeling. That is why I am finding lately that I am really liking conventional trucks now for riding through cones. For getting great power out of your pump PVD’s are hard to beat IMHO, there is direct input of power from your pump, but once you start riding cones with PVD's you better have your act together. Conventional trucks just seem to let me recover better if I get off track.
Also, conventional trucks like the Tracker RTX/S, Tracker Mid-Track, Tracker Full Tracks, and Indy 101s are much easier to adjust to different courses on the fly by just tightening or loosening or changing the bushings
with one wrench, or quickly adding wedge or de-wedge. Not to mention that they are A LOT cheaper even if you have someone like
"Geezer-X" (
http://www.monkeywrenchmachineworks.com/) do an axle or hanger width modification. Or if you decided to go with Indy over Tracker buy them from
"Chicken" (check his website).