They both have about the same amount of throw reduction. However, don't be fooled by the TRD "short" shifter, it's not actually any shorter than the stock one, however it does reduce the throw distance by around 30% roughly. I think how they've done it is, they've made the lever below the pivot ball slightly longer which helps reduce the throw. So the TRD Short Shifter isn't really a Short shifter.. but more of a Quick Shift Set, as labelled on the box. Personal preference tho, I'd probably be rocking the TRD shifter, basically because it has a better feel to it, and it's MUCH easier to install than the TWM one, as it already comes in housing, including bushings and everything is mounted, so there isn't much stuffing about. The TWM one is quite difficult to install as you have to remove the old shifter from it's housing and replace it with the TWM one, so this requires someone with a lot of dexterity, it also intern feels a lot stiffer than the stock or TRD one after assembly if the pivot ball hasn't been greased up enough, so it's a ton of stuffing about if you don't get it right the first time. I know tho, at the end of the day some people just go for aesthetics and buy crap anyways... In short, if your serious about reducing your throw than go for the TRD one, if your after something just for looks or some sort of aesthetic appeal, than the TWM one. My advice is tho, stay away from the TWM one, I'd rather take out the hack saw to mine than install that PoS. Hope this helps :) [edit] - The TWM one is also shorter than the stock one, probably by about 3~4 cm tho, but trust me shorter shifters are annoying, if you go to track days you'll notice most of the cars are fitted with quite tall shifters and for those that know the term dildo shifter, (an actual term, please don't laugh) would know what I'm talking about :)