Your severely limited with a 5hp blower. The little Craftsman 5/22 that I just sold has a 5hp engine on it and it does OK as long as you don't need to blow any snow over 8-10" deep. It really bogs down if it's wet snow. A 5hp blower is Good for Suburban Sidewalks and small driveways.
I bought a used MTD built Cub Cadet 8hp 28" blower a couple of years ago and it's a whole different animal. It doesn't care if I blow 1 foot or a 5 foot drift.
They no longer list the actual Horsepower. Your stuck with Torque or engine CCs. Here is a CC to HP calculator. This is fairly accurate but may be slightly lower or higher depending on the cylinder bore, stroke and compression ratio of the engine. http://www3.telus.net/findNchoose/engine_cc_to_hp_calculator.html
272cc is between 8hp and 8.36hp
This is the best blower that Home Depot has for under $1000 28" and 8-8.36hp https://www.homedepot.com/p/Cub-Cadet-28-in-272cc-Two-Stage-Electric-Start-Gas-Snow-Blower-with-Power-Steering-and-Steel-Chute-2X-28-HP/305948963
This one is just slightly over $1000 but 30" and approximately 11hp it's the best one that you can get for the money from Home Depot or Lowes. Both Big Box Stores carry these blowers. https://www.homedepot.com/p/Cub-Cadet-30-in-357cc-Two-Stage-Electric-Start-Gas-Snow-Blower-with-Power-Steering-and-Steel-Chute-2X-30-HP/305948980
I would recommend one of the Ariens or Honda blowers but the decent ones with an 8hp or greater engine are $1399+ You can get Cub Cadet blower parts pretty much anywhere.
Toro your going to have to find a dealer or some place that sells aftermarket Chinese parts. Genuine Toro parts are expensive. A cogged drive wheel for your Toro Personal Pace mower will run you $37 each for an OEM wheel or $18-$22 for an aftermarket made in China replacement that you will be lucky to get 2 seasons out of.
Ariens blowers are very reliable but parts can be hard to find after a couple of years. Auger gear boxes are damned near impossible to find for any of the 2-4+year old Ariens blowers. Trust me I have an older Ariens with a torn up Auger box sitting up behind my shop.
I am a small engine mechanic. I've been working on, repairing and rebuilding small engine junk since I was old enough to turn a wrench. If you want a good review of anything, just ask a mechanic that works on them.
Honda blowers are expensive and there parts are expensive but they are the most reliable blower that you can get IF you get there Mid to high end product.
Sorry I won't ever ask a dealer or a salesman about a product that they have absolutely no experience with.