Do you guys really think the Garmin is accurate enough over 100m? I don't know, but call me a skeptic.

I do not look at my watch while running strides because I think it is pointless, so in that regard, I cannot say if Mr. Garmin is accurate or not.  I can say however that its paces are pretty consistent (as it relates to time/distance traveled) when analyzing data post-run.

That is, I can pretty much feel what pace I am running each stride at, and this usually jiives with what I find when I get to the 'puter.

100m, 105m, not much difference, whether the Garmin is entirely accurate or not.  It's the type of exercise that works on your form, not the speed or the actual distance.

Yep. This is why I don't bother looking at my watch or hitting the lap button. But when I was new to doing strides it was fun to look down and see a sub-6 pace.