All aesthetics aside, there is a definite difference in the feel between the Navy and the Army. Go somewhere where you can handle each WITH EYES CLOSED and feel which one points better. To me, the Navy is the most natural pointing firearm ever created, but if you have large hands, the grips may feel TOO small.
Engraving and faux ivory never did a damn thing for me; the Taylor's is probably the higher quality of the two. But you do need to hold them.