Now days any system installed has pretty good coverage, battery back-up and the whole nine yards. So with the exception of systems recently installed, I think
Leavenworth County/Leavenworth City has an excellent system of sirens. They have mostly Thunderbolt 1000(t)s with only a very few 2001s, one Thunderbeam and one Thunderbolt 1003. They have sirens everywhere out in the country (mostly in somewhat populated areas and near rural schools.
Here is a map of the City of Leavenworth. Leavenworth even operates Thunderbolts in Fort Leavenworth. Ft. Leavenworth also has some Mods here and there (which are I assume operated by the Fort.)
LaCrosse, KS has a nice system of SD-10s and 1 2t22.
and Leoti, KS has a nice STH-10 system.