In reply to Flat4matt: I havent used Arcteryx, MHW stuff. I have used:
1. PHD Delta: good features but i didn't get on with design (removeable hood etc)
2. ME Citadel: the warmest but the heaviest (Scot winter YES, Alps NO)
3. ME Fitzroy: good allrounder (sometimes you need something this warm in the alps, trust me!)
4. Patagonia DAS: good allrounder and bit warmer than Fitzroy (prob my no1 choice for Scotland)
5. Montane Flux: another good all rounder (not warm enough for me for proper 2 hr Scot winter belays)
I'd say get 2: a DAS and AN Other. Maybe a 60g/sqm insulation jacket e.g. Rab, Montane. If one only then Fitzroy cheaper than DAS.