I have to ask what advantage you expect to see with the 150.
About the only two that I can think of are the Autogas STC and . . .well, that's about it.
Operating costs are not all that different in the long run, and the 172 is a more capable and versatile plane.
That said, I LIKE the 150 more than the 172, it's more fun to fly, but I have other planes available when I need something bigger.
