I've become quite accustomed to the user-friendly GUIMiner. Coupled with the latest phoenix and phatk2, I'm getting insane hash rates on my cards I have dedicated mining on. All cards @ 330 memory, 14 aggression, default worksize, vectors, and bfi_int unless specified.
5830 @ 970 core, 315.2 mhash, 40-70C (Outside computer, high variance based on weather)
5830 @ 1035 core, 336.7 mhash, 56C (Basement)
5830 @ 1015 core, 330.5 mhash, 53C (Basement)
5870 @ 1055 core, 489.0 mhash, 62C (Basement)
5830 @ 900 core 1000 memory, AGGRESSION=4 WORKSIZE=128 FASTLOOP=true, 243mhash, 70-75C (Living room PC. used sparingly for movies/browsing)
5830 @ 925 core 1075 memory, AGGRESSION=4 WORKSIZE=128 FASTLOOP=true, 270-283 mhash while browsing, 285 peak, ~200 while gaming, 70-75C (Gaming PC, outputs to display)
5870 @ 1040 core, 482.5 mhash, 61C (Gaming PC, dedicated mining card)
Not entirely sure why the major slowdown on the 5830 in living room; can crank up AGGRESSION but high responsiveness is needed in order to decode movies via DXVA since celeron 420 isn't strong enough to decode 1080p movies with just CPU power.