In reply to The Lemming:
You like the Prism, I'd say get another Prism.
In the past few weeks I've bought both a Montane Flux (2013 version for £70) and a Karrimor Avalanche.
Both seem great jackets. I'd recommend giving the Karrimor a go.
Comparing the two:
Karrimor hood has a decent amount of adjustment but seems like very little information in comparison to the Flux. Flux has velcro adjustable cuffs, Karrimor's are elastic and may be a hassle when thick gloves come into play. Karrimor is Primaloft One (Not sure what insulation the newer version of the avalanche is) while the Flux is Primaloft Eco.
The Karrimor is a ridiculous bargain at 40quid.