They're supposed to be the best, but after brazing and rebuilding a few, I strongly disagree. Comments enclosed in quotation marks are from the advertisements by the companies. I have rung their handbells. Great sound, high price. An Abilene, TX customer ordered a set which Schulmerich said would be suitable for change ringing and carillon.
Big bells are quite expensive.
I know I did at scout camp. When I was growing up in England, I was continually hearing of steeples that needed new roofs. The problem is that the vibrations of the bells shake the nails loose and the steep angle of the steeple encouraged the slates to pull free. If you'll take the bell to Pennsic, I'll figure out how to make it. Try the local Anglican church, since there seems to be a connection between handbells and them.