Aluminum vs. Urethane Bushings for Differential and Subframe

[Promise Land]

What is everyone's opinion on aluminum vs. urethane bushings for the differential and subframe? I don't plan to beat on the car, it will be more for cruising. Plans eventually are for a power adder though ~300whp. What should I put in and why?

[SketchyRollin564]

Solid will be a lot stiffer and have no flex, better for drifting and depending on preferance, any track racing

polyurethane is still a LOT stiffer than regular (and worn out 20 year old) rubber, and unlike rubber, it wont deteriorate after time. However compared to solid aluminum, it will still absorb a little bit. It also wont transfer as much noise from the diff to the car that you will hear. Aluminum can usually be had for cheaper. I personally have polyurethane subframe collars (not bushings) in my car, they seem to do their job well. For daily cruising, polyurethane would be better

[Razi]

For the diff, I'd use solid mounts.
S13s had their diffs mounted without bushings.

For the subframe though, I've heard that solid bushings transmit a lot of harshness and noise into the cabin, so I'd probably go with urethane.

[kouki munster]

I have aluminum diff and sub-frame bushings in my car, it feels fantastic compared to the worn out stock rubber(one of the sub-frame bushings was torn half way through) and I do notice a little more harshness now, but I prefer that because I also get more feed back from the asphalt. I'm sure that there are some more noises being transferred to the cabin, but the buddy club spec 2 does a good job making sure that I don't hear them.(or the radio)