Lots of variables in that one. If you get frequent storms that produce large amounts of snow, I would opt for the blower. If you're working an area that needs to be cleaned every 2-inches, go for the blade. You can get a wider blade, and cover more area, all while still being able to scoop and lift like a bucket. Just my .02
While plowing one of our customers lots, I watch another company clearing an adjacent lot with a skid steer and a pusher box. He finishes long before me. The little bugger even stacks the snow twice as high as my pickup. O well, at least I am warmer and can drink my coffee while I plow. Go for a protech or avalance!!
I have a new 753 with 8' blade we use in townhouse complexs, works great except on hills or in heavy snow, plenty of power, not enough weight. If I was to do over again I would have bought 7' blade & put Pro-wings on. Bobcat also makes an end kit for their plows, turns plow into pusher, sides fold back when not in use. If you decide to go with a full size pusher I would buy a 6'. All depends on you use.