The worst things about it are that it's small, the rooms are pretty ghetto, and drinks aren't cheap.
The last time I was at the XO, I busted out some Jon Bon (always a crowd pleaser) I enjoyed myself, and I spent a literal fortune on drinks. Because let's face it: for most of us, social lubrication is absolutely necessary if you're going to sing in public. There was puke in the ladies room, and we had to wait a long time for a free space to sing.
That said, I always enjoy myself at the XO. It's a little ghetto, which means you can crowd friends into a room that is technically supposed to be reserved for smaller parties. You can order drinks that are brought right into your private space by waitstaff, and you can belt your heart out with abandon, knowing that you're not spending an excessive amount on the actual room. (Pre-drink. That's the way to go if you want to save money.)
But is it the best karaoke in the city? No way. It's merely good.
693 Bloor Street W
Toronto, ON M6G 1L5
*Image by Moi Cody from Stock Xchng.