For me, the biggest thing was when I actually got to handle one. Found it to be much heavier than I was expecting it to be. It wasn't heavy, just more than I expected. It was in the leather, thumbhole stock, so maybe that is what through me off the most. I could see if it was in the nice walnut, (or what ever fancy) wood they use.
The straight pull was also a draw for me. Just screaming at me actually. I know they are not the only ones, and yes I have looked at them all. The appeal of quick barrel changes, and the general esthetics of the rifle drew me in.
I have decided not to own one just yet, and after holding it, and the weight I decided to just go the full custom rifle instead. That said, in the mean time I am getting my fix of classical straight pull action with the Anschutz 1727 action, and shooting the cheaper 22lr. That is a nice slightly cheaper way to get the straight pull fix in, for now!