Can you suggest a good catch can? There seems to be really cheap ones and really expensive ones. I just got my R55 back from 5 weeks in the shop. Now I got pretty much a new top end. I want to keep it healthy and last a long time!

 

Not sure if this is what you are looking for, but I found this video helpful for me on Oil Catch Cans:

 

Thanks! That was very informative.