I've treated myself to a new set of Arctics. Lovely and warm. It'll be a while before I dive them and I know i should do another buoyancy check, especially as they are replacing my summertime Typhoon wooly-bear sailing thermals. How big a difference can I expect the Arctics to have made? (Nice, new and fluffy as they are). It can't be much, surely. 0.5k ~ 1kg?