Microfibre by an absolute mile.
I've used scrims for 9 years or so.
Bought a couple of microfibres to try last month and I'm knocking 2 minutes off the average house.
One big house that used to take 1hr 20 I did in 1hr 5 mins....
Dries edges instantly, more shine, and I've never had a smear.
Just one wipe and walk away and trust it.
Even the inside of a smoky pub?.....doddle.
Rog.