I'd take the Bibby's for sure. If you know em and you trust em, that's the most important thing. I killed it with timing yesterday and ended up getting some killer untracked runs here in Mammoth. We've got a lot of snow and I was sort of contemplating taking something looser out like a Catamaran or an ARV 116 but I just ended up grabbing my Bibby's. I didn't regret it, I got first chair on 9 (think big steep no speed limit bowls) and even with no tracks in front of me I still hit patches of wind effect, buff, and some chunks in the runout. It's very rare that the snow is absolutely perfect, so I'll trade a little float/looseness for stability and confidence.