I personally like .info, .biz, and .us. Everyone loved the .info's when they were free. I'll admit I didn't renew every single .info I got when I had to pay, but I did renew the one's I was particularly fond of. My choices for domains are .com, .net, .us, .info, .biz, .org and then everything else. I don't really like .org if anything, but they all have there uses.