Not having a lot of snow driving experience in South Australia puts me at a disadvantage but here goes....
My Trailmaster has been on some rough tracks and then some very difficult rocky tracks a long way from anywhere. Having military experience in the G and driving my mates new Defender, the Grenadier is everything I could want in a 4WD. Yes its quirky but for reliable serious bush work it wins hands down. My mates old 130 Defender kept up most of the time and has the same turning issues so am used to the oil tanker turn scenario. Road driving is very old Defender style and I don't take the Grenadier to the city.
Regarding the Toyo; have not had the opportunity to drive one yet but I spoke to someone who has and he thought it was a good all round vehicle, but nothing outstanding. I will try and give it a drive soon but for my money a serious bush truck needs strength and mobility. The Grenadier built in lockers and its amazing drive train has done that. The issue for me was the limited fuel capacity but that was fixed with a Browne Davis aux tank. Toyo have always considered lotsa fuel capacity as standard.
The new Defender is very good on looks and performance but I have a nagging suspicion its system may be too fragile for extended bush travel. Its also an expensive vehicle before you kit it out.
I am not a cashed up gangsta so would not consider the G!
I agree with the comment about how did the Toyo win, they did everything except wear Toyota merchandise!