I'm using a pretty healthy size solid roller camshaft with valve springs that show 240lbs seat pressure. My engine builder fitted the Crane Golds (at my request), then replaced them due to the rockers deflecting around .030" He put some Crower Enduro rockers in place - problem solved! They're a little more expensive, but I've heard a lot of the Nascar guys use them without a problem.
They don't look anything special, but they seem to work...
Here's the first link I could find to them:
http://www.streetrodstuff.com/Products/285/