x2I would go with Brian Crower. If you add valves, springs, and retainers, you got it covered. If your going to buy those cams I would look into getting your head ported and a bigger intake manifold and throttle body.
I've heard the same thing but I question people's abuse and/or installation since I've had the same Ferrea titanium retainers for about 5 years, around 30k miles, approximately 500awhp, spinning 8500 rpms and probably 20 track events and have never had one issue :what:there are a lot of good companies for valvetrain; but after most of my research, i went with supertech. they offer an aluminum retainer package which is supposed to be more durable than the titanium ones. ppl have had longevity issues using the titanium retainers.