One of the most noticeable differences between the two versions of Graco TurboBooster LX and TurboBooster regular is the one-hand LATCH system. The Graco TurboBooster LX booster seat with LATCH system does come with the one-hand LATCH system, while the basic version does not. It may be a bit more of a hassle to install the seat with a LATCH system, but it's nothing to stress over. Overall, these two booster seats are very similar. Other than that, Graco TurboBooster LX is taller, so it's more suitable for bigger kids.