In my very limited knowledge, Breckenridge and Keystone usually get very similar snow conditions. And when I went to Keystone last weekend, it was all icy all over, with large patches of brown sticking out. If Breck is similar to Keystone, conditions may not be very good there either.
We're having really warm temperatures here (50's and even 60's in the mountains), so with a low base, things are not good. With a good base, expect spring skiing conditions.
If you have any option of changing plans, I'd recommend Winter Park. I just skied WP (Mary Jane) this morning. Conditions were okay (some runs were icy, others were okay); up in Parsenn Bowl it was great. Last weekend Loveland had okay conditions in some areas. I don't know how things are at Copper, A-Basin, Vail, or Beaver Creek.
But then again, this is all based on my very limited knowledge, so someone might prove me wrong easily.