Best string gauges for Drop A flat?

[synrgy]

Ive actually just switched to this tuning.
Im using Elixer 11's for the first 6 strings and a .66 for the A flat.
25.5" scale and it feels fine but I think the D, A, and low E could use a little more tension.

Where'd you find a .66 Elixer? At juststrings.com the single strings available jump from .56 to .68 with nothing inbetween.. I was looking for a .66 to try for my low A cause while I like the tension the sound is way off with the .70 I've been using..

 

[lurgar]

I'm using La Bella HRS-73's and I've found that the thicker core they use makes drop A pretty easy to use and doesn't lead to a flubby low string. In fact, I tuned to drop G# and still found it very useable and not flimsy at all.