Well, I won the SA76RS! When it arrives I will make a video of it, comparing it to similar BRK models as well.
I also found a lot of cheap Family Gard branded 1839N smoke alarms. I bought one of those too, so I will make a video of that as well.
Benson41011- I know you want an 1839 detector, so here is the link to the cheap ones. There are 8 left!
http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=151202504678