IMO more flexible work better for low tension. I'm using Circle K Strings(Kalium) .090 .067 .051 .039 and just for this thread I tuned them down to DGCF they where still quite lively even at such a low tension. I like a little more tension on my G-string just because it catches a little more hell than the rest.
But if you were willing to try http://www.circlekstrings.com/store/
I recommend getting .079 .059 .045 .033 from the bass singles its $22.00 + shipping.
Free shipping on order over $50 so if see something else you like on there go nuts
these strings rock!