I use lake winter boots as well. I picked them up before my coldest ride last year (-15F, with bootie covers on top), and was very happy with them.
Some of the Lake winter boots have a problem with the stitching on the back coming loose. I don't know if those are still floating around or not. Mine have the problem, and I have to get them sewn. Lake said they would pay for it, but have to follow up with them.
Good luck!