Hi Don, I see you're from Ontario so the A-Frame is likely away for the winter and you're not in a hurry. I bought my Milenco Aero 2 on Kijiji for 1/2 the price new. Might we worth keeping an eye on the listings around Oshawa to see what comes up.
** Edit: Sorry just saw that you're heading south later this month.**
Milenco Grand Aero as mentioned earlier are a good option as well. Milenco are the only mirrors I've ever used that stick out far enough to see down the side of the trailer which I love for parking.
IMO stay away from the mirrors with the rubber straps. You'll get at most a season out of them before the rubber breaks down. Had a holy &$*# moment in Niagara Falls when I looked out while stuck at a light and saw that one of the straps had snapped.
2007 Shamrock F19 hybrid - 2010 (22 nights), 2011 (24 nights), 2012 (11 nights)
2013 Surveyor Select 235RKS - 2012 (6 nights), 2013 (32 nights), 2014 (26 nights), 2015 (37 nights), 2016 (14 nights)