If you like full poly setup I can easily recommend Tecnifibre Red Code 18 (1.20mm). I have it strung @51/49 and have absolutely no arm issues I used to have with other polys, it's a very durable string, enables decent power and great access to spin.. effortlessly! What is more, control remains as solid as ever and feel is lovely. Give it a try and let us know your thoughts. Also, did anyone try full Black Code 17 at similar tensions??