Snow Blower Sizing - Opinions Wanted

[Woodstock Walt]

Just thought I'd provide an update to the thread. So far I'm loving the 84" WIFO behind my 5155. The video and attached pictures are from yesterday's storm, about 13" of heavy snow. Knock on wood, but I don't have a single complaint about this setup. Power-wise, the tractor seems to handle the blower with ease and is plenty capable of keeping up with the load.

Video quality isn't the best. I'm relatively new to uploading videos and such, not sure what the trick is to ensuring the quality stays the same when uploaded.