Min/Max Boards

Thanks for the input, yeah I'm considering Variant human. I look forward to your more in depth discussions! EK is one of the more interesting class options in the new edition to me so I can't wait to hear about it.

So I am about to start my first 5e campaign and have been predominantly looking at the fighter class because I think it would be fun to make it work. In particular the EK subclass of fighter is what I was looking at (champion is too simple, and BM isn't my style). However, I have seen quite a few mixed opinions regarding how viable the fighter class ACTUALLY is. So, I figured I would try to get an opinion from the people on the Min/Max boards. Is the Eldritch Knight a viable single class character?

For now lets assume that it is going to be used from 1-11 or 12. If the campaign is still going at that point I will revisit the idea of multiclassing because there is not much reason to bring a fighter much past 12th level, that seems to be a fairly universally held opinion. Additionally, lets assume that magic items are present but still relatively rare, that the other players in the party are moderately optimized (aka none of the other players will be going solely for the most OP combination), and that feats and multiclassing ARE allowed. These conditions I feel are fairly typical for most 5e worlds and will allow us to be more specific in the discussion.

Given the above, is the EK viable for those levels? If not, what classes beat it at its own job (which is primarily combat with some magic splashed in to help its combat capabilities) or what classes need to be added to MAKE it viable?