wow, so after a good 3 days of hitting with mamba black spin, it is an exact copy of technifibre black code in the spin and feel factor, tension maintenance isnt so bad at all. going on my 4th day and its only seen minimal loss. i'd also second what nadalex says and dont drop tension to low, just string at your regular tension. im starting to think if this company just repackages the strings that other companies throw away due to bad quality control..........due to things like to short or too thin/big.
Donnay Pro One 18/20 vs touch/rpm @54/49