You really need to decide what side you want to stay at. Braemar is bonnie and has good access to the hills but is small, quiet and quite limited. Blair Atholl has reasonable access but is again quite limited for accommodation. Aviemore is the next obvious place. It has great access, lots of accommodation (for all budgets) and more eating/drinking opportunities. Smaller villages like Nethy Bridge can be quite attractive, and are often full of self-catering houses, but lack other amenities.
Of all the options, Aviemore has by far the most in terms of activities. Early snow is a possibility, loads of biking, paddling, swimming, walking, climbing are all on your doorstep. We moved to Aviemore 5 years ago because of what’s available. My only regret is not having done so sooner.
Weather-wise, November can be a mixed batch. It’s not uncommon to get a High, giving beautiful clear, crisp days. On the other hand, it gets dark early and if there’s a long rainy spell it can feel quite dreary.
Happy to answer any specifics.