I've seen a couple people day it lags from time to time. Any idea what they might be talking about ? Have you experienced this at all?
I have not seen any lag, but my usage patterns are not particularly processor-intense (I don't really watch videos, I don't do games, I rarely take video but I do take a fair number of pictures). I like my phone to run as sleekly as possible, so I don't clutter it up with apps that I don't need. Almost all my data is stored in the cloud, so
my phone is essentially my gateway to information--email, SMS/MMS, IM, browsing the web, weather, news, calendaring, maps and navigation, a payment device, light social media, etc).
If the 5X fits your needs in terms of specs and capabilities, go for it. The best phone is the best phone FOR YOU.