Small ones digging force is around 2000 lbs - like BX25 Kubota, Mahindra Max28, Massey GC series, Yanmar 2400, JD 1028R. They all will lift about 5-800lbs on the FEL, and are easy to trailer/pull with a 1/2 ton.
They can do a lot of work and fit in small spaces, build walls, do shrub replanting and they dont break the bank.
THe next size up doubles the lifting and digging force - Kubota B21/B26 Yanmar 3200 but $35K new and $16-20 used.
These lager machines can have pallet forks and hyd thumbs on the BH so a lot more utility..