Used plenty of superpro polyurethane bushes in the past and I think they are great, so you wont go wrong buying from them. Also, the whole thing with nolathane really is a bit played up, it was a problem maybe 10-15 years ago, but a lot of that was because of it being experimental combined with owners/installers using the wrong lube on them. Things like grease and the like actually break down and attack the urethane, so they actually come with a specific silicone based grease for use with the material, ive not had a problem with anything nolathane have produced in recent years (last 5 or so). Only gripe some people have is they can get a little squeaky over time if the lube dries out.

Also note, nolathane and noltec combined with red ranger and whiteline are all the same company now, only kmac and superpro are about the only other external suppliers/manufacturers for bushes and the like.

You honestly wont go wrong with either, I just like the purple better