I voted "Is canon that fits somewhat within the Core Trek Time Line.".
Enterprise wasn't a perfect fit with the so called Core Trek time line, but that only due to the passage of time and creative differences in the production of the various series. Having said that, there is no reason to doubt that the NX-01 crew pre-dated the crew of the NCC-1701 even though it was never spoken of.
I don't believe in the "Altered First Contact Time Line". I believe that FC created and endless time line loop that was always a part the original time line. I also believe that the events of the TCW repaired themselves (as stated by Daniels).
Pretty much sums up my feelings. Though there are canon discrepencies with all of the series, I do feel that ENT made some changes that were a little too much at times.... but not enough to throw out the entire (and imaginary) canon bible of Trek.
In the end Star trek is just a TV show. We shouldn't care about the canon as long as we are entertained. If we spend too much time on this canon crap, that means we really need to get some more imprtant things going on in our lives.
Yep. When it boils down to it for me... I care more for entertainment value than keeping track of all the little discrepencies. When the discrepencies are big, they bother me, but the little stuff? Pfft.