I like both the mechanical and fig. 8 however the fig. 8 feels like a smoother decent than my Mamut Smart 2.0 (just practice i guess)
And with the fig. 8, I dont want to sit in the saddle on a hunt with just the fig. 8 as my connection to my tether. So, with using a Ropman on my tether, I find it easier to have my rappel rope on my hip in a roll pouch and attach it at the end of a hunt attach the rappel rope to the tree, hook it to my bridge, then unhook my tether - always connected to the tree for safety. I then unhook my tether and pack it away.
Now with the Smart 2.0, You can use just like a madrock and use your rappel line as a tether and stay hooked to it for your hunt. Which I may end up doing, but for now I like the tether/rappel ropes being separate.
Hope this makes sense! lol