For the money CZ's are the best. I am a lefty and I have never owned a left handed gun. I don't see the need for one. That is just my opinion. He will love a CZ. Try to find a 452 they are phasing them out for the new 455's. Don
I'll pile in with the CZ crowd. Bought a LH 452 four years ago. Will group at or just under a half inch at 50 yards with Wolf match ammo. Lotta fun.
If money is a big factor, the previously mentioned Savage lefty rimfires make a good option, although they are a bit plain looking if that matters.