sleeping bags

[mil-mil]

So i am looking to get a good sub zero bag for doing some Alpine routes this winter. I'm deffinetly on a budget due to the holiday season and all the other gear i am currently investing in. This is a -30 degree bag that i found and was wondering if anyone had heard anythign about this company.
http://gearx.com/product_info.php?products_id=2030.
I know it is about 1.5 lbs heavier then the average -30 bag and it is synthetic which most peaople frown on but i have never had a problem with. any thoughts or input would be appreciated.

[ricardo]

i have no info on the make of that bag but i do have this advice...

temperature ratings are extremely relative! are you colder or warmer than others around you? wet vs. dry conditions?

about the temperature you're looking at, i have a zero degree bag and the first time i used it was in january (10-15 degrees F) in the high desert of oregon under the stars. just wearing a base layer (thin polypropelene tops and bottoms) i had to leave the bag unzipped b/c i was so warm. i just think -30 might be overkill and you won't be able to use it unless you're under extreme conditions.

there are other things that you can do to add warmth to your bag:
-a tent or bivy will add a LOT of warmth.
-put your feet into your pack
-put your shell (winter/rain/etc.) over your feet. you will be amazed at how much this keeps your feet and legs warm and therefore the rest of your body. anyone who gets cold feet in a sleeping bag should try this.
-(for very warm bags) wear a base layer (polypro) even if you think it will be too hot. if you have skin exposed you will get too hot and sweat, which will cause the chills. this will put you in an uncomfortable cycle all night. unzip if you are too hot.
-a sleeping bag liner (silk/etc.) can add 5-10 degrees warmth
-sleeping pad...this is one of the most important points. open cell foam (i.e., thermarest / inflatable) are terrible for insulation...and you're F'ed if it pops. closed cell foam pads (super cheap) are more bulky but far superior in terms of insulation from the ground/snow. do not cheap out...get full length.

there is absolutely nothing wrong with synthetic bags. it will not pack down as small as a down bag (though compression sacks will help), but it will keep all its warmth when wet. that should be your key decision point...wet vs. dry situations...and cost.

[mil-mil]

Thanks for the input rick. I guesse i should have specified a little more what i was looking for. I already have a 30 and 20 degree bag but want something really warm for mountaineering/alpine use. I plan on mixing it with this bivy http://www.sierradesigns.com/bivies.display.php?id=650 and obviously a sleeping pad.

after saying all of this does anyone have any ideas of how cold it gets in say soraksan during the winter here?