I second the thumbs up for the Saint Paul Chamber Orchestra. The Concertmaster, Steven Copes is a regular performer/teacher here in Colorado Springs at our Colorado College Summer Music Festival.
https://www.coloradocollege.edu/other/summermusicfestival/
Steven is the complete package, sound/feeling/technique and is the master of a wide repertoire. We have had the pleasure of meeting Steven and hearing him in a nice sounding hall for several summers now...His playing continues to evolve and becomes more moving each year....unreal talent.