I bought the grand i10 sportz AT version new and have driven around 12000 kms so far.
Pros - build quality, driving pleasure, interior quality are incomparable. By far the most luxurious cabin you can get at this price.
The drive is extremely smooth. The doors feel solid, the cabin feels secure, loaded with features, basically everything and more than you can ask for from a vehicle at this price. Maruti doesn't even come close
Cons- this is what you'll be trading off if you go ahead with this car. The fuel economy is worse than you can imagine. At best I'm getting 8kmpl. I own an XUV 500 as well which gives around 12kmpl. So this is a serious downside.
Conclusion - If you're looking for a car for long daily commutes, you're better off with maruti. They won't score so well on the luxury aspect but at least the fuel economy would be satisfactory.