I'm not saying that they suck. They're actually pretty good, but there are several different Metalcore bands that bring a lot more to the table.
Also, though I'm not the biggest Opeth fan, I think it's pretty clear which band between the two has the better writing ability and overall talent.
How about this?
Between the Buried and Me is YOUR FAVORITE band of the last 10 years. They're clearly not the best.
Also, @ML- Devourment's vocals are great... especially when done by Ruben Rosas.
edit: I find Nile enjoyable, but the more music I'm exposed to, the less interested in them I become. Where as they used to be one of my favorite bands (hence my name), I now haven't listened to them in a couple of months.