Based on the data we have in our data base with regards to the overall flex profile of each of he shafts you listed, the ProForce v2 HL A flex has the most flexible overall profile for the A flex, compared to the others you listed. It is slightly more flexible overall than the average of ALL the A flexes we have in our database, which is a lot. Definitely a big change from the ProForce V2 Stiff. Should be a good choice if you want to hit it higher. Any of the A flexes would be, but the ProForce V2 HL 55 A flex, again, is the most flexible of the ones you are considering and therefore should help you hit the ball higher.