Yeah they can still be pretty crunchy at higher ISOs, but they are much easier to fix IMO.
This is ISO 800, shot through the passenger window, across my buddy sitting next to me in the van, also shooting. They coyote was so interested in sniffing out critters, he didn't seem the least bit bothered by us.
Sniffing for Varmints by
lennycarl08, on Flickr