I just went with the Sidi Vertigo Air but was also considering the Visions. Based on lots of positive opinions, I went with the Sidi's, bit also because they were adjustable for tucking in my riding pants (big on bottom).
With that said, and having now experienced the quality of Sidi's first-hand, I would say give the Visions a shot. If I buy a second pair for colder riding, I would most likely choose the Visions.
Moreover, this was my first purchase with New Enough and I certainly had a positive experience. I chose them for their no muss, no fuss return policy in case I got the wrong size boot.
Happy shopping... and if you get the Visions or Oxtars, please post your opinion of them.