To prove to myself that my senses are still functional, I timed the full swing with 9.5deg TM R-9 driver, TM Tour Burner 5i and Anser putter with each of the golf balls available in white only.
On my machine using the R-9, 9.5deg driver, the average swing-bar speed was 1.93sec with the GI-D balls, 1.79sec with the B-XD balls, and 1.73 sec with the starter balls.
With Taylor Made Tour Burner 5i the results are similar: 1.96 GI-D, 1.81, B-XD, and 1.72 with the starters.
With the Anser putter, again 2.21 for GI-D, 2.08 for B-XD, and 1.98 for the starters.
I took 20 full swings with each club-ball combination, timing from full to the strike line, and removed the two highest and lowest times from each sample set. Avg Std dev of the remaining was .03sec. The ranges varied by .11 avg.
A rather clumsy test using a cheap stopwatch, but I think the results are similar to what would be obtained by measuring directly from the mouse button.
Cheers,