The Meaning of Life, the Universe, and Everything.
Personally, I prefer Faithful as my go-to texture pack. But, I have been messing around with some other texture packs such as Dandelion which I downloaded recently. You could also visit the Resource Packs part of the forum to browse from a wide variety, hopefully finding something you like.
I have used Sphax BD Craft before, dont get me wrong, the pack is awesome, it makes minecraft look great, but i am one of those people that after looking at the same thing for a long time, i want to change it, so now i switch between Coterie craft, Sphax, Disco Ocd, and Dokucraft. thats just how i tend to do things.