Here is my take - Have had the JBSr for 5 years now. It is an extremely well built unit. The only limitation that i have found so far, is my tractors hydrolic system. To be effective, i find that you need a minimum of 200lbs counterweight.
For spreading materials it is great. But i have more often that not wished i had a full
loader to lift and make piles. You cant do that with the JB unless you run up or over,
and that causes the material you are working with to compact. For snow, it depends on how much snow you get. 8 inches or more and you will eventually need to pile it. Again something you cant do. If i were to do it again i would have taken my time to look for a loader. I plan on building my own loader, using the bucket from my JB. The part that mounts to the frame i am going to add a snow plow to.
Again this is not a replacement for a bucket.