In reply to captiangitfinger:
I have 2 HyVent coats - TNF Varius Guide and TNF McMurdo parka. I also have a Berghaus Paclite jacket which is GoreTex.
Personally I have found the HyVent coats to be fine as far as waterproofing's concerned. The only parts where I sometimes get leaks (when falling in deep snow) are the pockets - so it depends how much that bothers you (I just put things in the inner pockets).
I use all the coats for different things. I got the Varius for snowboarding but I like it because it looks smart (black) and you can zip in a Redpoint (down liner) so it's versatile. After looking at the Varius Acclimate in the shop, I reckon it's worth paying a bit extra for the Redpoint rather than getting the down liner in the Acclimate 'for free' because the Redpoint is warmer, and smarter so you might actually wear it by itself.
The McMurdo is the warmest coat ever, and you could quite happily bivvy in it. No probs with leakage with that one.
The Berghaus was probably a similar price to the Varius but it's a totally different jacket, not the type you would wear out smart as it looks v sporty. It's very light and totally waterproof (I wore it sailing whilst waves were crashing over me and the only leaks were from the water in my face!). You don't get much protection other than waterproofing as it's v thin, so you have to layer for warmth. I didn't wear it for snowboarding because I thought it might get wrecked with all the falling over, but it's great to keep in your pack because it packs up tiny.