Having been to SD a couple of times for work and pleasure, its always a real treat to find an upscale bar that isn't too stuffy, filled with wannabees or targeted towards college kids with money (which you can all find in the Gaslamp District). I've been to The Bitter End on two occasions and had an amazing time both times. The music on Saturday nights in the lower level 'underground' can be top-40ish, but if you're looking to meet up with a group of people and have a few drinks, music won't matter that much anyways. The 'living room' upstairs is a great place to chill and relax. The staff always seem friendly and eager to help out (the door men didn't charge me cover which certainly made a girl like me feel welcome). The Bitter End is owned by the same people who run the Ivy Hotel (which I didn't know when I visited SD last spring). The Bitter End is a much more 'fun' place to relax and have a couple of drinks than the Envy nightclub (and cheaper too).