[Rick Parker]

If you are yet to purchase the heads the screw in stud mount are the better option as it will allow you to have adjustable rocker arms regardless of whether you decide on hydraulic roller or flat tappet cam. The pedestal type are going to dictate the "stock" type rocker arms. However if you are able to incorporate a shaft mounted rocker arm set up that is the best available ($$). There are several makers of them and they will fit nicely and eliminate a lot of "monkey motion" in the valve train. The advent of shaft mounted rockers was one of the single biggest improvement that the "Winston (forget Nextel) Cup" engine builders came upon. It allowed an immediate increase in RPM and helped the valvetrain stability considerably. It just depends on what your budget is.
"Straight" Screw in studs with good poly locks will serve you nicely. Look at ARP's products.

Rick