BMR actually has Poly arms as well
I know BMR has the normal poly bushings. I think Steeda > BMR in a poly bushing application.
I believe Kelly @ BMR was asked if they had graphite impregnated bushings, like the optional Energy Suspension bushings. I remember him saying he was not sure. I know other companies have poly bushings that are not graphite impregnated. The graphite helps with helping the bushings not to bind. A good example is the upper control arm in our cars. It gets torques to something like 150 ftlbs. to the bracket. My Steeda bushing moves with ease using my hand. Their bushings work well.
I other reason I like the Steeda stuff in a bushing application because of the firmer durometer center bushing. It works better than the "normal" poly bushing others use as it controls fore and aft movements much better. So less distortion on launches, acceleration and braking.
And I have drove your car. It isn't nearly as quiet as my car. Not even close. lol I like the poly bushing on one side and rod end on the other. It is a good compromise for someone who has a car that they don't want to go with rod ends on both sides. It is impossible to build a daily driver as a racer. You make compromises one way or another. Be it in noise, comfort, harshness or effectiveness of the part.
Another place to check out for quality parts would be Team Z (They did the research and testing for the Cobra Jet suspension). I have a used Team Z on a lot of projects. Their prices are in line with others and their racer support is second to none. I have seen Dave Z give help at the track and on the forums. Stuff I never thought he would reveal to people. Much less the open public. Their parts and knowledge are first class all the way. Race Craft is another company that makes great parts. They may be geared towards hard core race parts as I am not sure they have a poly bushing option on their stuff. But they make a lot of cool stuff.