I'm repeating my comment from another thread here for
@nov's benefit and its overall relevance:
I've hit a bit more with the Speed Pro over the weekend and I thought I would add some other observations. If you are coming to the Speed Pro from the Gravity series, the Speed (at least to me) appeared to look/play like a 98-inch racket in comparison, something I assume is due to the tear drop shape in the Gravity. The reason I bring this up is that the location of the sweet spot between the two rackets are noticeably different with it being higher in the hoop in the Gravity and more central/traditional in the Speed, which I assume this is something to do with the head shapes. This could be a deal breaker for certain players if they prefer to strike the ball in a certain position on the racket face.
I've summarised my comparisons between the Speed & GPro below but as ever, YMMV:
Groundstrokes - Speed Pro
Volleys - Speed Pro
Serves - Speed Pro
Returns - Speed Pro
Power - Speed Pro
Control - GPro
Manoeuvrability - Speed Pro
Stability - About equal
Comfort - GPro
Touch - Speed Pro
Feel - GPro
Topspin - GPro
Slice - GPro
For me, I prefer the Speed Pro over the GPro primarily due to its better manoeuvrability, rock solid response and ease of play. Whether I switch from my Gravity Tour's to the Speed Pro is still up for debate - ideally I need them both strung (and potentially weighted) the same as currently I am unsure if the additional string thickness/weight from Head Lynx Tour in my Speed Pro is impacting its spin potential.