Razor Ultra Pro - It's lighter then a Pro Model but it has snapped where TSI's used to snap. And who knows how long it will take for Razor to Reinforce them considering the cost of production will go up which Razor is never happy to do. LOL.
Lucky - Razor Pro Model head and brake needed. (Pro models are pretty much out of style) They are CNC'd and as far as I know they are not heat treated.
TSI - Comes with a 90 day warranty and the TSI stands out because of the changeable Deck Plate. Three different Styles of Brakes/Fenders: The FlexFender, The FixedFender and the FootFender. TSI's are heat treated. They are the only deck that is designed to Flex under stress instead of bend. <-- Very useful feature. The Load goes into the frame and then the deck plate bring the frame back to the original position. Think of the deck plate as sort of a reinforcement to the frame. If that makes sense to any one.