Landjoff oversuits (available through Ebay) are pretty good too and less expensive than AVs. That black one of mine has stood up to a lot of grovelling around in the six years I've had it with nothing more than a seam gone at the back and a couple of nicks/holes. The only weak bit on them is the thread that holds the cuff velcro on, that tends to wear quicker than anything else.
I'm thinking about getting one of the reinforced versions to replace my current basic one, and move that over to being a digging suit and finally :lol:bin the knackered Meander!
Follow the horses, Johnny my laddie, follow the horses canny lad-oh!