I've never ridden the El Hefe or the XV (I pressume this replaces the Experience in the 2014 lineup?), but my "shortlist" consisted of the Machines, El Hefe, and Rome Targas. Flux DMCC and SF45s also looked solid but didn't have the canting. Burton Diodes are also ones I looked at.
I'm sure I would have been pleased with either choices on the shortlist - I've ridden Ride bindings before and they perform well and have probably my favourite toe strap out there, and Rome seems to get real solid reviews on here. The one thing that helped me narrow it down to the Raidens was that I wanted canting and good dampening, and it seemed to me that they had the edge in this respect.
There are a number of good threads on stiff bindings from around Fall of last year. Do a quick search and note the opinions of some of the veteran posters who have ridden a number of different bindings.