Brooks Glycerin Im Trying To Run More Efficiently, (forefoot Running), Should I Get The Newtons Or The Brooks Glycerin 6?

Im trying to run more efficiently, (forefoot running), should i get the newtons or the brooks Glycerin 6? - brooks glycerin

http://www.newtonrunning.com/003?s=003

http://www.brooksrunning.com/prod.php?p=41220