They are good and worth the money. Several professional outfits that I do business with have mentioned them in passing and one of them even stated that they the BR Series is almost as good as TEINS if not better. They cost a hell of a lot less too.
I am sure that you will find some reviews on google if you look because not many if any at all will have them on the Evo's right now.
I think they a good coilovers for the money and a good setup for road use, but have seen quite a few people now that are starting to have issues with the rears knocking (a mates have started knocking after 6 months road use)
Just spoke to a friend, he also has similar rear issues and have just seen an online review from the States that has a rear knocking review within half an hour on the track but does not list which set up it was running on.
I've also got a mate with an Evo 5 and knocking rears, he's been told that the BR's use the same rear shocks as the RM's and only the fronts are different.