Aurifil thread works best for piecing. Much less "fuzz" and tension stays the best on my machine. Color most often used is lite tan or lite gray.
Batting sizes, I usually get queen size since I can make four crib or small lap quilts out of one piece. Otherwise I get it by the yard. Warm and Natural is my favorite.
Not sure on prices.
Paypal would also be preferedd method of payment.
Have fun!