Q. Is Alto 800 is best or Alto K10 for a family?

In my opinion k10 is better than alto 800 in power and comfort. But as alto 800 has come with BS 6 engine it is better to wait for k10 BS 6.

If you want heavy engine car and a good family car then buy alto k10 and the value for money variety of alto k10 is vxi for manual and amt

I have answered this previously but the short version is buy the K10 as the price difference is small but the gain is much more.