Mate in the 13t range you cant go past the Hitachi, the 13.5t short tail swing excavator is very good in tighter situations, powered by basically Isusu highway engines which are very reliable and relatively cheap to service, most of the smaller range now are common rail engines and are awesome on juice, I dug a dam on my property in 30 hours (3 x 10 hour days) I used a 3/4 of a 205L of diesel and it wasnt easy going either, Hitachi have very good onsite and backup fitters.... food for thought