Straps a VERY much a personal preference.
Me, I
hate finger straps, convertible straps, etc. with a passion. And I'm not too keen on Prism style with the origami fold where the line attachment loop is. Now don't get me started on ones with multiple "adjustment knots" i.e. a flappy bit of line to catch your flying line during slack line moves, and instantly alter one flying line length a random amount - oops, I started...
It depends on how you like to hold the strap. I prefer to anchor it with my middle two fingers (see attachment) , BUT I don't like the fingers to be 1. in their own seperate tunnel or 2. restricted to a particular tunnel or loop size. And sometimes I'll put three fingers in the loop, it depends on how I feel at the time. If the wind is hauling, I'll even revert to using it over the wrist. So I just use a standard wrist strap, usually with a triangular ring - really versatile.
The quality of the strap webbing is another matter. Soft feel, but firm enough so stays flat. You can get REALLY nice webbing from saddlers, they use it to make halters.
And construction... no hot cut edges sticking up to catch and trap flying lines.
I guess that's why I make my own (NOT the one in the photo)
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