beaver,
I would guess that you might have been mixed in with some 737's which of late have preferred 190kts.
Now I know RJ's like 190 as well, I can accomodate.....
BOAC,
Apologies, just trying to answer questions/provide an insight etc.
Re track mileages, my view is when it's quiet you'll get the minimum possible.
When it is busy and there's pressure to release levels in the stacks, expect to go on a slightly more scenic route.
WF.