Well I think I answered my own question a year ago, looks like I forgot that a member bought 4 new Meyle HD bushings, and filled the voids with a pourable polyurethane kit.
He spent about $200 on the kit, including the poly, and basically got the same thing as poly bushings. The price tag on the poly bushings really is a joke considering you need the special tool to remove them anyway. If you could remove the bushings without the tool (and a big hassle), I could see spending the extra $120 for the "powerflex clones", but if you need the tool anyway, just go with OEM's or fill Meyle HD's up with poly like this guy
http://www.xoutpost.com/bmw-sav-foru...-bushings.html