Home Forums Hunting & Shooting Trapping MB 550 or 650 for coyotes?

I have decided I want to try Minnesota Brand traps for trapping coyotes. I am only interested in coyotes, nothing else.
I am not sure if I want the 550's or 650's.
I believe either will work, I like the larger pan on the 650's.
Both look to be very well built. I like the quality feel of them.
So which size should I go with? Don't really want to try 6 of each, looking to buy a dozen for now.