I had a single pair of zippered hi-tec Magnum IIs (I think) with the zipper, for all the years I was a deputy. I did have to have the soles re-glued on the toes, but with regular polishings, they survived patrol, a short stint in dicks, and the academy before that. I still have them. I still wear them from time to time. I do like having a 10" boot for my boot knife and ankle holster.
Now, I have my Keens that Ive been wearing pretty much every day. Comfortable out of the box, enough that I did that last Roll Out that I did with them less than 2 days old. I can also wear my ankle holster and knife with them, but being much lower, the straps are on my sock/skin, Vs the boot itself with my old Magnums.