Get the 2014's!
They are not beta in any way. They have the lighter malavita & genesis baseplate (which is a significant weight savings btw regardless of what others say), and genesis straps. There's no new tech in there that may or may not work. They are essentially a pair of genesis with a cartel highback.
I have a pair and they are amazing. I'm looking forward to getting a pair of genesis in 2 weeks and actually seeing what difference the genesis highback has on the ride.
Do tell, what do you consider a 'significant' weight saving?