AVL / RES are at premium $s.CCE is low REE, which doesnt sell more than 30 bucks compared to HREE, which sells on substantial premium of $300+ to $500+.. HREE is rare and more in demand. Everyone needs HREE, which will be short on supply in the future..
NEM is in the best situation with high value REE and producing with cash flow and access to China market.
AVL/RES have more upside potential than CCE just on the grounds of HREE and high price, where the shortage is and they will always trade on many fold premium.
just my 2 cents