We have around 8-10 days trekking in the Annapurna region, but want to avoid crowds. Can you recommend any quieter alternatives to the Annapurna Circuit?

There are lots of alternatives to the Annapurna Circuit in the Annapurna region. With eight to ten days you could combine Nar-Phu and Tilcho Lake. Getting to the Nar-Phu valleys would take about five to six days depending on where you started and how long you stayed in either Nar or Phu village. You could then scoot across to Tilcho Lake (you'd probably need to hop in a car for the short drive toward Manang village where the trail starts) for another four days trekking. This would give a great mix of traditional Tibetan villages in Nar-Phu and spectacular mountain scenery around Tilcho.

Another option is the new Annapurna North. I've not yet had the chance to walk this one myself (it's really only come onto the scene recently) but I have heard good things about it and it's certainly going to be very quiet. I'm not totally sure of the length but I think it fits with your timeframe. I know there are basic teahouses and they have set up an interesting community tourism project to ensure money gets distributed fairly between all villagers.