Hi, let me begin with telling you a little about myself and my game: I am 32 years old and started to play tennis again some 6 months ago after not playing for almost 8 years. I would consider myself as a 3.5-4.0 player, with a very strong forehand. I hit both forehand (and 2hnd backhand) with heavy topspin and I am mainly a baseline player. I have good accuracy with my topspin forehand and can also hit hard and straight shots with good accuracy. I hit second serves with good topspin/twist. Whn I played tennis in highschool I used to brake strings really often. The topspin would make the strings eat into each other and then I would ocasionally shank/mishit and then the strings would brake. I recently bought 3 second hand Babolat Pure Storm raquets and have tried some various strings (Babolat Hurricans, SPPP, some Babolat hybrids, Big Banger) and have found out that the strings nowadays seem to handle topspin alot better than in the older days so durability is no longer a problem for me. But, I don't really like strings like the Big Banger because they tend to loose their tension and go dead pretty fast. So, I want strings that hold their tension well, and that are good at generating spin. Are there any strings that are supposed to be good for spin (e.g. hexagonal strings or strings with a ruff surface) that really make a difference or is it just marketing)? Durability is not really a problem, at least not at the moment. 17g preferably.