Wigggys is supposed to be the best available
I brought a pair hodgman overboots to AK for just in case use chasing caribou..They seemed ok in testing but didn't use in the field.
In reality my hunting pants in conjunction with Gators get me through just about everything.
I've been messing around recently with light rain pants over my current pants/ gator setup and just taping the rain pants cuffs to my boots...seems pretty rock solid.
One thing about any over boot it has limited capabilities. Streams etc they work fine.
Swamps or anything with brush...not so much.