Santro all the way.
Its EFi, better build quality, excellent pick, comfortable on highway, soundless on 120kph on highways, better AC and above all its not a PAK SUZUKI suzuki product.
BTW, I have a 2005 Santro, 54K driven totally on Petrol/highoctane. Currently in use with my mother. Driven on highway only once that too when it was new, used for markets, schools (PICK and Drop] etc, alloy rims, poineer mp3 pre and JVC speakers.
Let me know if ur interested. Ill ask my dad if the price is right.