A buddy of mine ran through several cams in several weeks trying to find the "perfect" CIS combo. He started out with ANDIAL Group Bs, then tried 964s, then SC330s. At the end he stated SC cams were his favorite for the application. Tons of torque and no lag with his setup.
What you choose will depend upon the other components and what you want out of your engine.
I am running SC cams with a K27-7200. Very satisfied, but then again I didn't spend the money and time to do what my buddy did.
RarlyL8 Motorsports / M&K Exhaust - 911/930 Exhaust Systems, Turbos, TiAL, CIS Mods/Rebuilds
'78 911SC Widebody, 930 engine, 915 Tranny, K27, SC Cams, RL8 Headers & GT3 Muffler. 350whp @ 0.75bar
Brian B. (256)536-9977 Service@MKExhaust Brian@RarlyL8