Tanabe, RMM, Hotchkis...they'll perform the same. The reason that the Hotckis is $375 is 'cuz it has adjustable front endplates. They allow you to adjust your front camber so if you have your car slammed, or you plan to in the future, you can adjust the tire so that they'll be flat w/the ground & you wont end up ruinning your tires.
Go w/Tanabe if you're gonna get coil overs or if you're not gonna lower the car a lot. Go with Hotckis if you're gonna lower the car a lot & you're gonna do it with springs.