Hi - I have same setup as you, SC2450 with Bercomac 48" Blower. I used it for the 1st time last winter. I have a slight inclined driveway. One of the first things I had to do was get chains. The extra weight in front takes weight off of the back tires. This would be even more pronounce with the bigger SB52. This past summer I also decided to get the back tires filled with calcium.
As for the blower. Solid. goes through just about anything. And very quiet considering what is going on. Get extra sheer pins if you have a gravel drive. Get extra regardless. Until you get a decent base you will likely pick up a few rocks and they may get caught. This year I'm using my rear scraper blade turned backwards to pack down the snow for the 1st few snowfalls. Once the base was set last year i could just 'float' the blower.
Also, make sure you check REAR tire pressure. This can cause the blower tilt or skew so that one side is higher than the other by as much as an inch or 2. It took me about a month last year to figure that out, the whole time incorrectly blaming defective design of the blower. To check, get it on a level surface and raise the unit so that is just off the ground. If it is skewed, play with the relative air pressure in the rear tires and you will see the skew get corrected.
This summer I added a 4" stroke 12volt actuator to control exit chute angle. Seems to work great. Bercomac sells this kit for something like $340, I was able to build mine for about $130. Simple install actually.
I'm happy with the Bercomac, but I have never seen the SB52. Cost to me was about $4000 + tax and they did initial install.