greasable swaybar bushings

i just ordered BMR sway bars..front and back.....i was surfing the net, and i saw that energy suspension.. sells "greasable" sway bar bushings ....are these worth getting?.....im sure the ones supplied with the new BMR bar are not....are these worth it or not? they are only 17 dollars?

i'd stick with rubber on high use jobs like the sway bar. poly is good for something that doesnt move much like maybe lower control arms or torque arm. the poly on my sway bar lasted about 2 months...then it's only another 17 bucks and my time to fix the crappy compressed bushings. there is too much strain on sway bar to use anything but rubber