TLDR: I like Joonie's latest Darknet 4.65 Cobra, before that I liked the 4.46 Rogero Cobra port, and before Cobra was a sparkle in the eye, I used Rebug.
There really isn't a "best" firmware in that list. It all comes down to what you plan on doing with it.
Rogero is well known for stable vanilla CFW releases
Habib/Darknet are well known for CFW - especially COBRA ports
Rebug was good with mixing CEX/DEX kernels (though mostly defunct now)
Though to be honest, you really can't beat a Cobra FW. Loading up ISO's instead of JB rips is pretty sweet. Having PSX/PS2/PSP ISO are great too.
Personally, I'm using the Darknet CEX 4.65 and it's working fine. If you're a bit of a stickler for not having to wire up a PS2 controller on a slim - Rogero 4.46Cobra is good too (though requires you to resign everything 4.46+)
To be honest, not sure why you listed 4.50 and 4.60 as there really isn't anything gained on them - you might as well be on the latest if you're going up that high. You'll eventually have to do some work resigning anything higher than your CFW.
Not sure what you mean by ODE support. If you can have CFW - why even bother with an ODE?