For a full distorted-mid-crunchy sound I think Elixirs are hard to beat. It may be something about their coating, as they have a very present midrange as opposed to the more "hi-fi" sound that, for instance, DRs have.
My bassist has always used them ... when he bought his new Spector Legend Custom (4 strings tuned to C#), it came stock with DRs ... it sounded great clean, but kinda shrill with distortion, and the crunch didn't cut on a band situation (sounded just like a clean bass behind the guitar wall) ... soon he swapped them for his trustworthy Elixirs, and voilà, the crunch was back! (we mainly use heavily distorted bass, being a 1 guitar band).
just my 0.00000002 cents