Hi there, I don't believe for the level you are currently at a high tour level ball will make a large enough impact to justify the price. With the level you are at I would focus more on balls that will help give you more distance, with you having a slower club head speed you don't have to worry to much about spin as you wont be able to create enough with your club head speed to effect the balls flight as much as much as someone with a very fast swing could. I would find a medium priced ball that has a harder core that will help you hit it further here is some great examples http://www.grumpygopher.com/10-best-golf-balls-distance/