Scottrade Center

The is a great place to watch a hockey game. It's especially great when you're in a suite, with a fully-stocked bar and all the food you can imagine. It's really super especially fantastic when you didn't have to pay for any of it!!
But alas, this may not be comparable to your situation. The views are good from anywhere in the building. The atmosphere is good and the fans are knowledgeable and fun.
I understand they have some cool "all-inclusive" tickets that come with all the food and beer you can consume. Deal! I'm doing that next time! Unless someone springs for a suite again.

I have been to many different types of events at Scottrade, from the circus to concerts to Blues games, and it's a flexible space that works well for this constant variety.  The halls are big and bright with plenty of signage to find your way to a seat, lots of vendors selling various food, drink, & souvenirs, and a few nice bars & restaurants peppered in.  For such a big space, the sight lines are great and it's easy to follow whatever action is taking place.  While it is kept up well, it could use a few updates.  
If you can be early to an event, there are several nearby parking options with the attached lot and street spaces.  Note that the closer lots sell out fast and the other lots are a bit of a hike.  In nicer weather, it's fun to park at Union Station, grab a bite there, and walk down to Scottrade later.  Also, when I saw the shuttles from numerous Soulard establishments, a light bulb went off in my head for free door-to-door transportation next time, for Blues games at least!  I usually like to grab a bite and a drink pre-event anyway.  I have used this for Cards games, just not for Blues games- super convenient!
One minor gripe: we were in a 4th floor suite with my company, which was a fun way for all of us to be together, socialize, but also have a great view of the game.  A couple of times groups of folks left for different food and drink needs, and the elevators off these upper levels are older, slow, and small.  This was a 15-20 minute process each time.  One of us asked about using any nearby stairs, but were told they are locked during game time.  I am assuming (or hoping!) that this does not include emergency exit needs.  Seriously, I'm sure emergency plans are well in place, but I don't really get why stairs aren't available.  I use them at Chaifetz and Busch Stadium all the time to avoid these exact scenarios.  Maybe the older space wasn't designed for this.  
Overall, a good multi-purpose event space.

Go Blues!

Home of the St. Louis Blue's and an occasional concert, circus or Monster Truck show.  There is not much to say about Scott Trade other than the food is less varied than Busch Stadium. I was amazed to see that the men's rooms have a metal plate screwed into the urinal to prevent people from flushing cigarettes or other items.