When it comes to monitors, I’ve always ascribed to the “bigger is better” principle. But there’s no denying that bigger monitors come with bigger price tags, too. So, Amazon Prime Day is a great time to try and score a deal—and I’ve found one you won’t want to miss. MSI has a 40-inch ultrawide gaming monitor with an IPS panel that’s dropped down to $300 right now (25% off) for Prime Day. That makes this MSI MAG401QR the same discount price as the popular Gigabyte G34WQC, despite being even bigger and coming with a better IPS panel for more accurate colors. (That’s the kind of panel I insist up…