Hi Guys: I am currently playing with 2 youtek prestige mps strung with babolat tonic at 54. I would like to buy a third stick for the outdoor season to use in case the conditions are wet and have it striung with a synthetic that will play similar to the gut at the above tension. The two strings I am looking at are technibre NRG2 and x-one biphase. Will either of these work? If so, which one, would you recommend and why? What tension would you string them to be similar to tonic at 54? Thanks.