If i have to buy one from all of these 3 options, i ll go for Alto VX for Rs. 4.19 Lacs and then install Sanden AC and Landi Renzo CNG, both will cost you 40,000 rupees.
End price will be 4.60 and you ll have to install both after a good 3,000kms, as a brand new brand new local car should be driven Without the Load of AC and CNG for 3,000kms.
And yes, one Alto 1000cc is in heavy usage for the last 3+ years in the family and has caused Zero Problems. On the other hand Mehran is a teen dabba, i have one at home just driven 2,000kms and already has 2 different noises coming out of it.
Coure is ok, but is 850 cc, you ll feel the difference while driving a Coure instead of Alto 1000cc on highway and on other big roads, for sure !