From TW Product Feedback:
Comments: Used as a cross string with Babolat VS Touch Gut 16, Klip Legend Gut 16/17, Tourna Quasi Gut Armor 17, and Tournafiber Irradiated 17, in a Wilson Blade 2015 16x19. The mains in all cases were strung at 51 lbs and Tourna Black Zone 16 was always strung at 45 lbs. I'm a 4.5 that hits hard, heavy topspin but flat when warranted. In all setups, the Black Zone offered a soft, plush feel, with extreme spin, control and power. Tension maintenance is outstanding, at the top end of the spectrum. I have used Genesis Black Magic and Wilson Revolve as crosses using these same strings and Black Magic by far offers the best feel as a hybrid. In each case, mains have broken first, thus durability is exceptional. Gut and Black Zone work the best as Tourna multis I tried broke after 7-8 hours. Black Zone in a gut hybrid works and lasts the longest. One of my three setups still plays and feels like it did after breaking in the strings, almost 2 months later and with little fraying on the gut. Absolute best setup I've tried in a Blade. Black Zone is soft and very easy to string. It reminded me of Tourna Big Hitter Black 7 but in a round smooth option. Since Black Zone was released long before BHB 7, it almost seems like it is the same string except for one is shaped and the other isn't, but Black Zone lasts much longer, again, perhaps because it is not shaped. Though not offered by TW, Black Zone reels are cheaper than Genesis Black Magic, and plays relatively similar, with more feel and power. The lower price point and string quality makes this a super value.