I don't know Kev. The Boston show I went to in Sept. was indoors and the Garden isn't the best place for sound.
And before that was Mohegan Sun, which is either a hit or miss depending on how good the sound crew is.
Luckily, Rush has a pretty good sound crew.
(Although there were a LOT of problems during the Boston show!) I wouldn't mind seeing them playing in Mansfield again.