So I ended up getting one of these today:
http://www.canadiantire.ca/en/pdp/th...-1999333p.html
It is seriously small. Good reviews on Amazon, and I like that i can monut it on the wall, not the ceiling and it isn't to obtrusive. At least I can hit the silence button without a chair, or rip it off the wall and throw it across the room.
It was actually on sale for $20 at Canadian Tire, Costco has a 2 pack for $40ish.
I will report back, hope for no more false alarms. My biggest issue is it takes a weird battery that may be expensive or harder to find. I certainly won't have one sitting around at 3am when it decides to die.