anyone using them? if so what have you found to be the best, like best settings for say battery and nighttime use?

I'm just using one to switch my phone into silent mode at night when I'm sleeping. No real need for battery savings on this end as battery life for me has been outstanding. Also I usually charge my phone at night anyway.

I am actually still using Llama for most of my other triggered events as it seems to be more effective.

How you liking the M?

I'm using SAs to turn wifi on at home and nighttime silence of the phone. No need for battery savings since I have excellent batt life. Usually still at 60% or higher each nite b4 charging.