I posted on another forum/thread about these two and I decided to buy them both to see.
Epic Peak: http://amzn.to/2plh088
These are $21.99 as of writing, made of black plastic with a non-slip type texture to them. Fairly light, don't have a gram scale or anything, but probably about 2-3oz or so. Came with an oversized hardshell case --case could easily take a pair of normal sunglasses-- which has a plastic clip on it. Either way, the case will protect the glasses unless you manage to crush it.
Straight FOV: The thick plastic frames under the prism do block a tad more than the Ti ones. But, one could readily navigate around as what's going to probably be directly in front of you won't be blocked.
Side FOV: Again, thicker frames did not provide as much as the Ti ones looking straight out of your eye, but looking around on the ground, I did not see an issue.
UCraft (these have a Ti frame): http://amzn.to/2qeDZPy
These were $49.99 when I had bought them, sold out now though. Ti frames, with typical soft rubber nose pieces, plastic ear pieces. Came with a much smaller, form fitting case, a little tool kit, and replacement nose pieces.
Straight FOV: Of the two these were the best. The smaller frames allow for more of whats to be seen straight ahead at a greater distance, could almost run around with these.
Side FOV: Of the two these were the best, but, marginally. I did not experience as much of an impact on the side FOV with the thinner frames versus the thicker ones.
I actually did take these climbing. Prism wise they seemed to be about the same? Hard to say for me, as this was my first set of them to try out. I have more pictures of the two side-by-side on a cutting mat with 1x1 grid. I'm going to return the Ti ones as the plastic ones do it for me.
$19.99 for the Epic Peak ones, I did forget to mention that the one above has a lanyard, these do not. :/