Depending if you are a huge p2w / small p2w or complete F2P since if you are either small p2w or F2P go for edo deidara. Since yes sasuke does become better with the skill books but it will take more then a year or even longer for the skill expirement system to come out where F2P / small spenders have a chance to get good skill expirements on ninjas. Untill then the skill books will cost quite alot so it wont be that easy to get susano sasuke fully skill broken.