As someone who does commercial snow and has a loader mounted blade.. Heres my opinions: Loader mounted is more versatile. I can take the blade off and put a bucket on to load salt into my trucks. The loader mounted blade handles gas station parking lots just fine. Frame mounted will be muuuuuch stronger though! If you dont need to load salt then 100% go with frame mounted. If you have an inexperienced operator, youll bend the loader arms in no time.
I was going to order because my atv is hard to steer with the angle and to cut down on passes. I see the same issue occurs with the angled loader mount in very little snow. I'll pass and stick with the atv ...