My sharpest knives out fo the box are Spyderco Manix & Kershaw (ZT) 301.
I also have an Alias 2 & the factory edge was good, but really nothing special, I resharpened the Alias with my Norton 8000 & a little bit of stropping and now it is a lot sharper.
I also have a Nimravus & the factory edge was good like the Alias, but the angle was too big, I have narrowed the angle and now my Nimravus is one of my sharpest knife, it is a lot better than out of the box.
From my experience the best factory edges came from Spyderco (I have several models: Manix, Delica, Lava, Karambit), but ironically my worst factory edge was on a Spyderco Spyderfly, almost dull:thumbdn: I also have problems sharpening it, it seems that the steel doesn't want to take a good edge.
Benchmade models (Alias 2, Nimravus & Morpho 32) were good but the sharpening angle is too big (especialy on the Nimravus).