I have two versions of the same model, one is with variable in log and the other one is with variable in level. The one in level works fine but the one with log is not. I just wonder whether it is effecient to rewrite some equations in log to the linear form, say, orginally, I have

exp(Y)=exp(K)^alpha*exp(L)^(1-alpha);

Is the following more efficient, given there is another equation exp(Y)=exp©+exp(I);

Y=alpha*K+(1-alpha)*L;