I like Mountain Mist Blue Ribbon, or Polyester light for batting, although I think my next quilt will use wool. Right now I'm quilting with a Hobbs Polydown batt - it's loftier than my usual batts, and quilting quite nicely.
For needles, I like size 11. I've been switching between Richard Hemmings, Roxanne and John James. Whenever I see a brand I haven't used before, I buy them, just in case they're better than what I'm using now.