Liana is best value for money. I have one, and cousin bought a new City...
Liana: Better Engine, AC, Sound System, Tyres/Rims (LXI), ABS/EBD brakes, Fog lamps, Side Skirts, Matching trims, Slightly compact size eases narrow/tight parkings, roomy interior.
City: Brand value, better dashboard, quieter engine but less power, sophisticated interior.