I am currently using Dovre Extreme (high leg) for high-ground and Altberg Defender (low leg) for summer / arable and rate them both.
However, at the tail end of last year I purchased a pair of Brandecosse Rubicon for use on the peg and they are a thing of beauty. The leather is fantastic, the workmanship second to none, the service from Brandecosse is exemplary. I will be looking very, very closely at their high-leg stalking boots when the time comes and, assuming that the fit is good for my foot, they will be the ones that I go for.