Due to head/block milling on my 383 (hydraulic lifters, stock mopar rockers) I need to either go with adjustable rockers (big $), shim the rocker arms up, or go with adjustable pushrods.

The guy who built the engine doesn't feel good about adj pushrods, even though is is a pretty mild (350 hp) motor that I baby. Anyone running adj pushrods? Had any problems? Are they a no-no? If they are ok, whose would you recommend?