Drop D and Eb Standard
Maintains slinkiness on the high strings, and beefs up a tighter feel on the lower strings, especially when dropped.
Drop C#Using the 11-48 set with the low-E string swapped out for a 52 gives you all of the low-end chug that you need while still feeling like standard tuning on the higher strings. Retains the feel of standard tuning even when dropped to a much lower tuning.
D StandardOptimal for detuning. Similar to the Skinny Top / Heavy Bottom, but several gauges heavier. Provides a higher-tension feel.
C Standard and Drop C
Still feels slinky, but retains a good amount of tension at a significantly dropped tuning.For an even slinkier, looser feel.
Creating a custom set of single strings allows you to retain tension on the higher strings, while allowing enough twang on the lower strings.
A slightly adjusted custom set of single strings allows you to beef up the higher strings, while retaining the size of the lower strings. Can also use a 62 or 64 on the low-E string for added heaviness and tension.