I usually tip in the 20% range. However, we recently went to dinner with neighbors the other night. I ordered surf/turf and my DW ordered a Filet. Our neighbors ordered meals that were significantly less expensive. Now, the waitress didn't do any more work for us than they did for the other couple. Why should my tip be so much more? Now, don't flame me. I did tip about 21% (I don't like odd totals hitting my bank account). It was just an interesting quesiton that my neighbor asked.