I've got an iPhone 3GS coming via FedEx tomorrow or Friday and I need a good case for it. I've been an iPod Touch user for some time and I've always liked the combination of an anti-glare screen protector and a rubber case. I have the Incase rubber sleeve for my and it seems to work well.
 
I don't want anything too bulky but I do want the case to offer some decent protection. I'd prefer something that didn't include a screen protector so I can replace those independently as time goes on without replacing the entire case. Any recommendations?