I just recently purchased Isis - Wavering Radiant and I have to say that is definitely the album of the year so far for me. I'm pretty much blown away! It has all the elements of Isis that I've always loved and used them in bucketloads! Absolutely fantastic!
I also heard the new Dredg album 'The Pariah, The Parrot, The Delusion' and I was pleasantly surprised they seem to have backtracked a bit to their more experimental style a la 'El Cielo'. Don't get me wrong, I definitely enjoyed the more commercial Catch Without Arms, but more of a fan of their more experimental stuff, as is the case with most bands comparing their experimental stuff to more commercial stuff.