From what I've "heard", some peole like back/side heat for smaller snakes. Some say that as long as the snake is kept in mid-high 80 degrees all the time, it's sufficient. Others really like a hot spot with one area being around 90 degrees. I have heard good things about both of the vendors you posted. I'd say it comes down to what you like best and what you want to go with. I doubt one is really superior to the other, but maybe someone with experience in one or both of the products will chime in.