the easy answer is hands down yes Eezi awn and howling moon are the best of the group you listed. I love my Eezi awn. And have used Howling moon in past, both great both worth every penny in every way.
Now the hard part tepui makes a fine product as does CVT I can't speak to ARB.
It depends on how much you will use it, what conditions ...

.
As for buying used I would not hesitate to buy a nice used RTT. Mostly because the folks selling just have not used them so facing facts and selling. Or do use them and are moving to a different option for size or whatever. These folks typically take great care of there gear.
I hope this helps in some way. By the way I am partial to Eezi awn over all.