I dont actually agree with 92kII, i installed a cusco front bar, then a cusco rear bar (neither of which are as good as the TRD jobs)
anwyay, i was expecting a noticable difference when i wacked the front bar in, which i got, and i really only installed the rear bar for peace of mind, however to my surprise the back was noticaby stiffer and cornering improved. Right now the strut bars are the only suspension mods ive done, and its made a big difference over stock, i dont know if it would have been as much an improvement if i had already done sway bars / springs and shockies though.
SO, in closing, im happy with the Cuscos, which i got second hand for $100 and end.