Danny Boy,
I remember that Danny G. (digtexas) had a procedure done to stretch his esophagus. I did a search and found that his was done with a solid device instead of a balloon, and I believe he was pleased with the results. The search also showed that larryfb had the balloon procedure done and he was also pleased with the results.
There were also a couple others who had this procedure done. I'm sure some of them will respond.
Rainbows & hugs,
Rosie