Aigomorla: Antec P182 you mean, right ? Or the 190 ?
I'm very happy with my P180B (black 182 essentially... water cooling ports and tri-cool fans in the 180 v2).
Honestly, I don't move my case very frequently nor do I open it up more than once a month on average... the $100 case is about as high as my budget will go for a case. If you lan or have more money to drop (want bragging rights) I think aluminum or more expensive cases can be nice for that. I just haven't found any features I would want that aren't in the $100 antec cases.
Things more expensive cases have:
windows, integrated card readers, aluminum, more fans, fancy paintjob (mirror finishes, limited edition colors, painted interior), fancy fan speed controllers/temp readouts, blinking lights, fancy brand name