I have been rocking Original SWAT WinX2 Boots for the past 2 years, haven't failed me yet.
I got my boots from
LA Police Gear, they have a large inventory of "tactical" brand name boots, but keep in mind they are located in the States so shipping might be a little costly. It is a good starting point to get more info/read reviews/starting prices on various boots though.
I also know a couple of other players that run their issued CF boots which they love. I'm not sure how easy or hard they are to obtain but there is a couple options for ya at least.
Also FYI if you end up getting a pair of boots that aren't waterproof, a good alternative is GORTEX Socks. There was a recent thread [
here] listing a bunch of quality socks.