As a pretty consistent flipper, I purchased a Tour Striker 8 (the entry level TS) 6 months ago.
It didn't take too long before I was hitting nice high shots instead of the worm burners I started out with. It felt good knowing that I was finally hitting down on the ball.
However a few weeks ago I got my teaching pro to record me using the TS. To my disappointment, despite hitting the ball high off what was a hard mat, I definitely didn't have a forward leaning shaft. My hands were above the ball at best, and may actually have been a tiny bit behind.
There's no doubt that the TS is a great concept and may be the best training aid out there, but my advice is to get the TS Pro 7. The TS 8 is clearly harder to hit with than a normal club and will point you in the right direction, but if you want the reassurance that your hands were ahead of the ball, get the Pro version.