Been playing with the Aero 500, the 10.3 oz one, after 3 years of Mfil and Aero200's of 11.9 oz and slightly above.
I hit almost the exact same ball, but easier.
I can loop my heavy topspin much faster with more spin than ever before.
I lose out a bit on traditional old school forehands and flat backhands.
I challenge the notion that it's swingweight is in the 306 range. Seems much closer to 317 or so, enough to see little lost from the 340 SW's I came from.
I DO need to stand in and move forwards more on returns of big serves, but I can swing much faster, quicker, and get earlier.
There is NO difference in 110mph (estimated) first flat serves. On mishits, they do go slower, but any mishit goes slower.
Volleys I go for depth control, so very little difference since the stroke is easier to produce.
I do NOT rally from the baseline, instead, I hit a forcing shot and then go for a more forcing shot.