Tojiro DP Nakiri will be a little heavier due to the bolster, have VG-10 steel in the center as the cutting edge, and decent handle F&F. Blade finish will be a little nicer on the Tojiro and it will be thinner behind the edge. The Artifex Nakiri maybe a little lighter, but it has G10 handle scales, which are somewhat heavy. Handle F&F may go to the Artifex slightly. No metal bolster and AEB-L steel (mono steel vs the clad blade of the Tojiro), but the finish isn't as nice as the Tojiro and it is thicker behind the edge. The Tojiro will cut slightly better, but the steel isn't as nice to work with as the AEB-L is in terms of sharpening. Thinning out the area behind the edge on the Artifex will make it perform VERY well, and will probably beat out the Tojiro once it's thinned.
In that price range is the Dojo Nakiri: http://www.chefknivestogo.com/dojousuba165mm.html
It has a carbon core, but is clad in stainless.
Are you OK with a Japanese style handle and/or carbon steel?