Stick to Blade v9 98 16x19 or Blade v9 100, but probably the 98 since you're tall and have more power in your swings, even if you demo and perhaps initially prefer the 100. Other brands will feel and swing differently from Wilson, and Blade v9 is fabulous, no need to change. Put a forgiving string into it, like Solinco Tour Bite Soft 1.25 at a medium tension, a white Wilson Pro overgrip, and you're good to go
Even if you do go with something else don't be surprised if you decide to go back to Blade v9 after a while, after your first choice just doesn't feel right. For example, Ezone 100 has a very wide elyptical beam which gives it huge power, and it's cool in the beginning, but after a while you learn that you can only swing it in one specific way so to speak, or that you hit with a frame a lot, mishits on volleys fly all over the place etc, because of its wide beam elyptical design, and more. Speed MP, last two gens were very launchy, they send the ball too high, so you're forced to spin to control, and many balls fly long, and this new Speed MP is made to have lower trajectory, but you have to hit much harder, so not bad not great either.
Stick to Blade 98/100, it's the best optimized of them all, and you'll get both control and power, good spin, and a lot of stability and forgiveness for your doubles volleys, it's fabulous on volleys and returns. For your size, and long arms, it's important you have reasonable control to be able to release your swings more freely
On this forum you'll get 400 recommendations from 100 different posters, but very few are coaches or of similar experience, so the advice is all over the place all the time