I've been wanting to get a new watch, but I wanted to wait for the Series X/10 this year. However, my current Series 5 has pretty bad battery life right now and it's only getting worse. I also rely on it a lot and it's just become more and more irritating (I really need a larger screen model). I found a great deal on a series 9, 45mm, Cellular, aluminum for ~$350. Would it be a good idea to get this, or wait for the 10?