Was searching for a smooth poly string good playability duration and low COF to hybrid with Hyper G 16L on my Blade 18x20. I tested Wilson Revolve 17 as a cross and although it gives amazing pocketing and thus spin with HG 16L on mains I am kinda afraid to hit fast because sometimes it sprays. So after searching I found BC4s to have it all , same COF as revolve and much better tension maintenance but it is Shaped~! Does a Poly-Shaped/Poly-Shaped hybrid works? What's your thoughts? Does it make sense to test HG16L mains / BC4s crosses? Thanks