Peter hit all the specifics, and I think stand hunters are going to fall in love with the new Celsius line. I can hardly wait.
The 90% jacket/pants from '07 are darn near waterproof in moderate conditions. Case in point, today we have spring break but it's cold, very windy and with a cold driving rain most of the time. I just got back in from 3.5 hours of hard walking in mostly thick timber looking for antlers. Wore the 90% garments, plus the beanie, baseball cap, gloves, mountain shirt...and I emerged from the timber tired and sore but completely dry! And armed with a massive personal record of 21 antlers!!!!
Now I realize it wasn't the briars I've seen in SE Iowa, but I was getting poked and prodded constantly by cedar tree limbs in thick timber (basically sticks, these aren't "boughs") and rained on and I was fine. The '07 line was ideal for the walking/stalking/climbing hunter and for the stand hunter in moderate temps. The '08 line will have the stand hunter covered in cold temps too.
On sizing, I felt it ran pretty true to size in the large sizes. I'm 5'10" and maybe 180-195 lbs. depending on the time of year. I found L sizes fit well, and I bought an additional XL 90% coat to wear with some non-Sitka heavy insulation when stand hunting at Zero to 20 degrees. The snugness in the arms takes some getting used to, but sure as heck beats bulk when handling a traditional bow.
I don't have a Downpour jacket so can't comment on size, but would suggest that anyone who mail orders anything and then receives something that doesn't quite fit well, to send it back for exchange. I've been guilty of not wanting to do that in the past, and have then regretted being lazy.
Anyway, I really believe in the stuff and it's best trait hasn't been mentioned much: it is so darn easy to pack for a trip now I can hardly believe it. The stuff packs down great, and the Mountain Mimicry is such a versatile pattern most of you won't need anything else. Both of those factors lighten your load tremendously whether packing a suitcase or a backpack!
Bryce Lambley