It just depends what type of view you like. For example, I like focusing on team shape and the big picture, so I stand on the concourse to get as far away as possible, so I have the inexepensive supporters section tickets. If you're into the athleticism or heckling the refs, then sit on the field. If you want to drink and get rowdy, sit in the supporters section. In general, the west side is the corporate side and tends to have more of a busniessy crowd and more families. It is also slightly closer to the field. The east side is sort of more blue collar and the SS is in the southeast corner; it also has the mountain view as the backdrop. They're not real strict about checking tickets, so you can probably move around a bit if there is enough space (which there normally is). If you want to sit on the field and the online ticket system shows it as sold out, stop into the store/office in downtown CS on Tejon and Platte and they can probably hook you up. They are very friendly and the president of the club will literally just walk up to you and talk soccer sometimes.