Replacing D90 with something smaller/lighter

So I have a question for you guys, I currently have a D90 and I'm looking to replace it. I purchased the D90 when I was a Photo student and while I have taken some GREAT pictures with it, it's currently just too heavy and bulky to carry around. I'm looking for a camera that can fit into my pocket but if that's not possible I'll settle for a camera that isn't too bulky or heavy. Since I have experience using a DSLR and I know my way around the advanced features, I don't want a simple point and shoot because I know the limitations are going to drive me crazy. I was considering the Sony RX100, so if anyone has experience with that camera or another one that fits what I described, that would be great. Thanks.