I used to go to this cinema years ago before they had the new IMAX theatre, at that time, the theatres were relatively small in size (compared to other cinemas), but it was adequate considering it was cheaper than other places as well...
I've recently gone back and experienced their new IMAX theatre, I have to say, it was amazing. It's what you would expect from an IMAX theatre, the seats are very comfortable as well, and the place was very clean.
An extra plus is their matinee prices! An IMAX movie is $8 if you go before 6pm (i think?) so if you want to save a buck and still have a great experience, huge plus! The same price for seniors at any time of the day, any day of the week.
The only downside is that you can't buy your tickets online, and no reserved seating. Hopefully it'll come in the future!