Wanted: solid road bike for 6’ rider

I have been riding my 20 year old Trek 180 on our fabulous Cowichan roads 5-6 days a week for years. During my last tune up the tech guys gave me the sad news that it was time to invest in a new ride rather that but money in my ol’ faithful. I am looking for a quality solid bike that can keep me on the road within in the limited budget I am stuck with. I realize that this will take either luck or a fellow lover of the roads generosity. I’ve got $300 ish I can offer for that 2nd bike hanging in your garage. If you have a bike that fits my situation I would love to hear from you!