Altissimus
TreeHouser
....look pretty good in August's vids. Easy to install and remove by the looks. I generally run blocks. Wonder about advantages vs. costs. Looked like 3 / 4 " Tenex with eyes and rings. Thanks In Advance.
As long as your ropes are clean, or mostly clean, they are great. If you work in dirty/sandy/muddy conditions stick to blocks, as the rings can't handle the grit.