In reply to Duncan Beard:
> Planning on staying at Saas Grund from August BH for 2 weeks. We'll be attempting our first 4000ms so all the usual easy suspects after we've acclimatised. I doubt that we will go much over 4200m & looking at F+ to PD routes. I have a choice between B2 boots (which are a bit bendy but I have flex bars) or some fairly light B3s, taking the train so can't carry both, recommendations please!
B3 boots are not suitable for the majority of classic alpine routes, especially at the lower grades. B2 boots, however, shouldn't be bendy.
The important thing is that the boots are in good condition and warm enough.