Your feet, your preference.... It also depends on terrain and load.
I prefer a 6"tall, lighter boot for most matches.
I have a wide feet and I'm old/arthritic... Solomons fit me very well and have great traction on the mud and clay we have here in western Oregon.
I usually wear a low top,6", boot at the barn or shooting in the woods and a pair of their ankle height during the day. Their waterproof units are truly waterproof and their customer service is excellent.
For rough terrain and backwoods antics where my life may depend on me being able to walk out I wear Danners-again, they fit my feet well- Super Rainforests (US Made) for all wear day in the wet and cold (like some of the matches in NE Washington), Pronghorns(chinese made) and some Berry Compliant Marine Corp Rat Boots for summer and desert stuff like Steel Safari.