To answer your performance question I need some personal info Nude Pictures so I can generate a profile.
Ignore all but the 250 pro and 350 metal.
But Houd's right, ignore the Screamers, Neons, Basic Models etc. 250Hz pro (ie with a counter) or 350Hz (Mmmmmm) are the truth. Screamers and Neons are a little slower due to rotor weight etc.
And it's shiny
Thus, training on the 350Hz is more effort, trains you harder and therefore improves your 250Hz performance.
then I shall pounce like a coiled spring!
I'm not convinced about that even though at first glance it seems obvious. There's been a couple of studies of training with added weight for sports movements; one was done with a weighted baseball bat, and it was found that it had a negative effect on batting with a normal bat because of changes attributed to rate coding and other neural factors.
drag-running
This ain't no pike trolling or queer athletic forum, pal.