Original Poster, I think you have good intentions and understand the basics of teasers, but you are still pretty misinformed with quotes like these:
"I understand teaser payouts are bad, but if you can hit 60 plus percent with -120 teasers, isn't that much better than spread betting??"
"Arizona??? teasing a double digit underdog is the absolute worst kind of teaser play there is, how many 10-14 point dogs end up losing by 30+ points??"
"Dallas?? a 7 point road favorite teaser is the 2nd worst kind of teaser there is. 7-9 point dogs traditionally win straight up at a mediocre percentage (especially if you're looking to put it in to a teaser)"
You need to understand the actual, precise math behind teasers to truly understand where the advantages and pitfalls lie. Saying something like 7-9 point dogs win straight up at a "mediocre percentage", shows how far you need to come. I am only being critical because you seem to have the common sense part down, but you need to go study the math. Your comments so far in this thread aren't helping anyone.