How much do you care about scratches?

This largely depends on how you want to define looking good. Personally, I like a simple design which is well laid out, some might call it functional. Others might like a case which has lots of angles, a front door for the drive bays, fancy designs on the front or side of it. Whatever you go with you've got to come to terms with the simple fact that it will get damaged. What you've got to decide is 1). how/if you plan to prevent it and 2). how/if you are going to fix it once it does happen.

I have an acceptance that my case will pickup scratches and dents because of my handling of it and the LAN party events I attend. This is because it rubs against other things in the boot of my car and I use it as a dumping ground at the events. How much damage I actually see depends on how close I get to the case as most is small, others is a bit bigger. I make no attempt to fix them because I'm not that skilled, I can't be bothered and I know it'll pickup more damage anyway.