What kind of gas mileage do you get with your 2012 1/2 ton Suburban currently?
How about breaking even with a one/two year old replacement? Have you looked at 1 ton vans? They are easily $15k less than a comparable (MY) Suburban. We bought ours last April with 16k miles on it for about the same price that I was seeing 2007 3/4 Suburbans with 80k+ miles. It tows our trailer with ease.
The best part is that it gets about the same in daily gas mileage as our 05 1/2 Suburban got (14-15mpg) and we get over 17mpg on the highway not towing.
Were do you live in Canada? I was a little concerned with winter driving, but with traction control and stability control it did great. In fact, there was a couple of days that I took the van instead of my Cruze because I liked how well it did that I trusted the van more on those two occasions. I would imagine that snow tires would make it a tank in the snow.