I would recommend you ask your pitchers which balls they prefer, and buy those. My DD likes the Worth Dream Seams. The Baden balls have higher seams, which should provide more movement, but my DD does not like them. You can order balls online, but our local sporting goods store give us a "coaches discount" of 15%, so we just buy them there.
I have a Dudley SBC11YFP on sale here at Tomark Sports. Retail is 64.95. On sale now for 44.99, or until sold out. I currently have about 82 dzn left at this price.
I purchased three different balls (dozen of each) to form my own opinion. The Dream Seam, Baden (Danielle Lawrie control seam) and Trump Stote. All were about the same price per dozen and all are nice balls. DD likes the Baden seams which are high like the others but also a little wider. The Trump being 2nd and the Dream Seam 3rd. I agree with her as far as leather quality and ball feel, but had our #1 pitcher toss it back saying the ball felt bigger because of the seams and liked the Trump with is tall but thinner seam.