If you're looking for the best espresso machine on the market, you might be wondering if a 15 or 20 bar machine is better. The answer depends on your needs and preferences. If you're looking for a machine that can produce high-quality espresso with consistent results, then a 20 bar machine is probably your best bet. If you're more concerned about price and don't mind sacrificing some quality for a lower price tag, then a 15 bar machine might be a better option for you. Ultimately, the decision comes down to what's important to you and what fits your budget.