I haven't felt the full effect of mine yet, but I'm thinking that I'll be pleased with the results.

R-28 equivalent on the roof, and R-21 on the walls. Sealed up tightly. Eliminates air infiltration.

 56' X 72' X 18' cost just under $14,000.00. Considerably more money than batts & loose fill, but I've been told that it will pay for itself in 3-5 years.

 One of the things that I like is no more insulation. I'm not putting any more in the walls, and nothing on top of the ceiling.

Walls are being covered with 1/2" OSB. 

I highly recommend Slagel Insulation from Fairbury, IL. I looked at quite a bit of their previous work, and heard nothing but great reviews from customers.

I must say that they lived up to their reputation.  (309) 377-3111.