Which sword is better in Skyrim Chillrend or Red Eagles Bane?

It depends what your playing style is and you do have to give up another sWord (red eagle something i forget what) to get red eagles bane but traditionally chillrend is better because it does more damage.

p.s chillrend doesn't level up with you once you get it so it is better to wait until level 36ish until you get it

hope this helps!