I am looking to get a road bike to ride primarily on bike paths for exercise/leisure. I'll also use the bike for trips to nearby markets, stores, etc. You can assume I know nothing about bikes. I'd like to spend under 150 but will go up to 300 if it makes sense from a value standpoint. Please be specific in your recommendations as I am a complete newb and will likely misinterpret your advice if you aren't specific. Thanks!