We have lohmann brown, they seem yo be quite hardy and lay a lot of eggs. Hyline is the other breed we use if we can't get lohmanns, hardeier still but will lay less egg.
As has already been mentioned, make sure they have at least 14 hours light. They will also need more food, make sure they are getting about 130g - 140g each, any less and they will use the energy for body heat instead of egg production.