I just tested my test rackets I got from TW (Yonex Ezone 98 and Vcore 98, both 305g).
I hit the red Vcore 98 already once in the begin of this year, and really liked the 1BH with it. These rackets today were strung with a different setup (yellow/green neon -ish string, I think I saw the letters PTP 1,25, but I asked TW for more informationn about kg/date of stringing).
So I started again with the Vcore today, and again ... the 1BH is sooo easy with this racket. My weakest shot turns to the best shot with this racket. They have spin & power, direction & control is very good. However I had some problems with my FH. A lot of balls landed in the net. And it's not so easy to get a lot of weight/power on the balls with my FH. The plow-through is clearly missing. Slices were ok, but of course I am bit spoiled on slices with my Blade v7 18x20. (I need weight for good slices..).
My hitting partner told me that my balls have a lot of spin with this racket. The downsides of this racket appeared this time even clearer, than last time: the racket has a strange feeling and even a weird sound when hitting, kind of hollow. It feels crisp and firm but somehow stiff. Like your hitting with a metal pan. And because of this I think this racket is no candidate for a full bed of poly for a long time.
The Ezone 98 had a much better feeling from the beginning. It is much closer to the feeling of my blade v7 than the Vcore. If feels quite "harmonic" and round while hitting. The BH was not as good as with the Vcore but after a couple of minutes of adjusting I could also land a lot of good 1BH with it. Even though from the TW specs the Vcore should have more SW (322 vs 317) it feels the opposite on my FH. I had more plow-thorugh and weight on my balls with the Ezone. (maybe the specs are not matched). Also the Ezone felt more stable than the Vcore!
The Ezone had quite clearly less spin, but far enough and much more than my current blade 18x20. I think the Vcore is very extrem with spin, especially with this poly setup, and this makes it a bit of hard to control and too whippy (balls have no weight).
Overall, I have to say that both rackets had good enough control for me (Ezone slightly more). The Vcore had quite clearly more spin.
BH I would give slightly to the Vcore, but the FH I liked much more with the Ezone.
I didnt hit too many volleys today and no serves at all.
Atm I would buy the Ezone, due to the much better feel and the way I hit on FH's with it.