I put stock in the fact that both Ertz and Thompson were not only very accomplished players (Gatorade player of the year in their states), but also won at a high level, leading their teams to state title games their senior years. I think they will be battling for the starting spot the next few years, and with all that Thompson accomplished in HS, he may unseat Ertz. He is Snyder's best QB recruit during 2.0 by far, and one of his best ever IMO.
Meanwhile Hubener was a part time QB for a mediocre 3A school and Delton was a slightly more accomplished 3 year starter for a decent 5A school that never made the playoffs during his HS career. They are great guys to have in here as depth, and while I'd like to see what Delton can do, I do not think he is (or ever will be) better than Ertz or Thompson. If he chooses to transfer, he probably ends up very low D1 or maybe even D2, perhaps back at home in Hays.