Well need i say more in my opinion dugi is miles better than zygor on both classic and retail,the addon from dugi alone doesnt use half the amount that zygor does dugi guides are way more efficient,i also personally feel levelling is much quicker with dugi,the customer service from dugi guides is outstanding it really cannot be matched,i also like the interface of dugi much better than the dreaded zygor.Overall dugi wins 10/10 from all angles.