i use the Haix Cold Wet Weather Boot as both a stalking boot and as a general hill-walking boot - i also wore them pretty much constantly for a 4 month winter tour in the Falklands...
i'm very, very happy with their support, their robustness, and their waterproofness (word?).
having also worn the Alt-berg Defender i can back up the view expressed up thread that the Alt-berg feels (to me at least) a softer boot - its a very comfortable boot made well with high quality materials, and if i'm doing a long walk on tracks or forestry roads, or running anywhere, then the Alt-berg gets the nod, whereas if i want something thats going to cope a bit better with trackless mountain walking in Snowdonia or the highlands of Scotland i'll take the Haix.
personally i never got on with the Haix High Liability boots - i'm not a fan of gore-tex linings in boots that i might where in warm weather, so my winter boots are the Haix Cold Wet Weather, and my summer boots are the Alt-berg Defender. they do also look like clown shoes...
the Haix CWW boots have a Thinsulate and Gore-tex lining, the Haix high liability have just Gore-tex, and the Alt-bergs have none - the huge advantage of the Alt-bergs is that they are much more comfortable to wear when wet inside compared to the other two, and that it dries out much quicker. once a boot with a Gore-tex lining is wet inside its going to stay wet, and often not even a whole night in front of the fire in a bothy with dry them out - with the Alt-berg, at least ypu don't get that horribly dispiriting wet squelch as you put your boots on in the morning...
as ever, a boot that doesn't fit is a torture device regardless of how much youpay for them, and you need to pick the features to suit what you want the boot to do - not what some no-mark off the internet reckons makes the best boots in the world.