@MickeyThompson since @BraceMaker mentioned me here, I feel like I should give you my experience. I started using FM years ago in college for tricks and loved the comfort of it. At the same time, I was looking for a solution for my front foot in slalom. I had a Radar binding for a while but I was using regular laces instead of bungee (stupid idea, don't do it). I spend a bit of time on a Reflex but, apart from how uncomfortable the shell felt, I had a few pre-releases. That was the main point of concert for me, as releasing mid-wakes at 39off on an onside pull is as scary as it gets. I went to EVO and never looked back.
A few notes if you are considering this:
If you have an RTP in the back, EVO is a great solution. If you have a rubber binding in the back, EVO is also a good solution. If you use two hard shells, I would not suggest 2 EVO bindings, but more so the quattro.
Get the regular top cuff, so just one buckle, just bungee on the shell. It will be safer and since the technique trend has been (correctly) to go for a softer, multidirectional binding (i.e., rubber), plastic tied by bungee is a good compromise.
the C section tends to enlarge over time, however you will not pre-release! You will feel a click across the wakes on the side in which the C section has enlarged, and for as scary as it might be, you will not crash across the wakes. My rule of thumb has been to change cuff after 20 releases.
If you are in between sizes, go for the smaller one.
Heat mold your liner. The shell is extremely comfortable, but molding can make it ever more so.
I have heard of a couple of shells exploding, but personally it has never happened to me. The ones I saw were black, and I have almost always bought the white shell. I have never checked with PJ if it is a different plastic compound, but I am sticking to white :D. Also, I add a few extra screws on the bottom when changing shell, so maybe that helps to keep the pressure spread more evenly. I'll send a picture as soon as I get the chance.
Get some extra bungee. You can buy it from FM or order it elsewhere. I use a slightly thinner bungee than stock just for personal preference. In the US, I was buying 3/16 here.
I hope this helps :)