A good condition 07 non-Efi Cultus doesn't cost below 625k in Lahore. Efi 07 Cultus in good condition is usually 700k+ cost.
Cultus:
Pros: Roomy, Comfortable, Good drive, A/C ok, petrol consumption way better than Alto, Cheap spare parts, Efi version has excellent pick.
Cons: Built quality pathetic, Khar khar sounds from windows seats etc, non-Efi not suitable for hilly areas.
Alto:
Pros: Drive is good, A/C ok, spare parts not costly, Built quality much better as compared to Cultus (no khar khar sound etc), engine powerful and suitable for hilly areas.
Cons: Not roomy, not comfortable, petrol consumption not good (CNG consumption is good), pick is pathetic.
If u intend to drive the car on petrol I shall say go for Cultus,