Am I using my Celestron 8 Schmidt-Cassegrain telescope correctly? I became interested in astronomy a few years ago and started with a Celestron AstroMaster 70AZ refractor telescope. That seemed nice, and I wanted to upgrade to a go-to telescope that was also more much more powerful, so I bought the 8 inch Celestron Schmidt-Cassegrain.

It's great, but honestly I'm a bit disappointed because the magnification doesn't seem all that much stronger than my 70AZ. I haven't done a side by side comparison. But for example when looking at Saturn, I was expecting to see more than just a white ball with a ring around it - I was able to see that with my 70AZ. I thought I'd see colors, and maybe be able to differentiate between some of the bigger ring bands.

I haven't tried any deep sky objects. I'm using various lenses starting from 30mm down to 6mm.

Am I doing something wrong?
Keep in mind that many of the photos you see with colors are composite images.  To differentiate colors try to use some various color filters.

To see bands on Saturn, try using a yellow.  This will bring out different details in what you are seeing.   

This link provides some more details for using various filters.
http://www.telescopes.com/telescopes/howdifferentfilterscanbetteryourviewarticle.cfm