I've seen many shows at Massey Hall. Dream Theater has been two of those shows.
MH is 100% guaranteed the best venue for any live performance. The acoustics are bar-none, and there's not one bad seat in the house. (Even the obstructed view seats are alright!)
I'm very excited for this show. I'm 9th row, Right Floor, Center.
Clearly you've never been in the third balcony. I'm 6'2", and literally there is not enough room for my knees to sit straight. Saw the TSO Beethoven's Last Night tour there a little over a year ago, and man, uncomfortable would be as politely as I could put it. Built in the 1890's, I guess there weren't too many 6' people back then.
Otherwise, you're right, it's a fantastic venue. Although I thought they'd be doing a bigger venue. MH is only 2800 or so I think. I know they're not gonna sell out the ACC or anything, but their past summer shows at the Amphitheatre filled the seats... and that's about 7000.
You must be right in front of me, I'm RCF, row J, seat 34.