Product Review (submitted on 28 April 2016):
I have just replaced a pair of the (very) old Guide boot which I have been going for about seven seasons. They would have probably lasted another year, however I had the opportunity to get a new pair this season so the old ones will be my back up pair.
I couldn't decide between these, the G4 and another well known brand for the replacement (the ones with the aluminium bars in the sole ;-) ). A member of the family who has this boot and the other brand recommended the G3 over my other selections and I have been pleased with the result.
On first glance, the design has changed slightly from the old boot, but look a bit closer and there are significant improvements in the design. The boot is a lot more robust but, at the same time, a lot lighter in weight. There is plenty of support in the ankle and the sole is more comfortable.
They are expensive but hopefully I will see at least the same amount wear out of them that I got from my previous pair.