The neck is comfortable. If I remember correctly, it's a "D" style that was prevalent during the time. The action is relatively fast, as comes from the factory and only had to make a minor adjustment to the neck to get the bend I was looking for.
The electronics are 1957 Burstbuckers (Gibson wound) and the they use high quality switches (silent) along with high quality caps. It makes a big difference when you plug it in (noise wise).
Here is what really sold me on the Epi. I went to the shop, that had both the 60's tribute, and the Gibson matching guitars. The Epi sang out up to 11 seconds on a hard strum, just like the Gibson. Did a blind test against both axes and the professional musician that was there with me could only tell the difference in sound once out of a dozens different tries between both. The EPI is also heavy (mine is a bit over 10 lbs) just like the Gibson. Use a strap.
The Gibson tested was just under $6K, while the epi was $600 and the case was included. Dropped the plastic right there and I have been happy with it ever since.
I will say this - If you plan to gig professionally - spend the $6K to get the Gibson, as it will last longer and hold up better in hard use.