Serving with pure aero VS and regular pure aero?

[bageldog]

Currently using an ai98for matches, . I've been messing around with a pure aero just to get a little something extra on my serve. Find it hits kick serves that are just plain nasty, but I'm having a little trouble flattening it out (same for ground strokes). Ai98 definitely giving me a more predictable first serve and seems just fast, but the spin serves go to the pure aero hands down. Has anyone served with the new pure aero VS jack sock model AND the pure aero, and can comment on how they compare for the different serves? Wondering if the VS maintains almost the same kick abilities but is better on the flat bombs than the pure aero