Whenever I wear a non-bowtie, I pretty much always go with a half Windsor. Dead simple and I love the symmetry. Plus you can easily loosen it with the knot in place, which means if you get it tied once you can quite often just leave the knot in it for the times when you need a tie in a hurry. In fact, it's so simple to use I've always kind of wondered why people would go with a clip-on tie instead (other than obvious use cases like law enforcement, etc.).