Yeh I liked mine when I first had them,,,very comfy and warm,,,but I disagree on the support bit,,,they are a very soft rubber,,,with little ankle support ....
Mine also split,,on both Welles where the heel ,,joined the upper, after 18 month
Mine have been fine Tomo. On my second pair as I wore the soles out. I must admit, that since I started wearing high walking boots, I very rarely wear wellies for any long period. HAd 'em on for a few hours this morning as I've been setting traps around some ponds, and the sweat has disolved my feet