Honestly, I don't like i10 looks at all. i20 still looks good.
If you want something very spacious, perhaps Indica or Indica Vista might be right for you.
Good bets could be:
Nissan Micra, Ex Showroom 4 and above
Polo OTR around 5+
Again, if space is a major issue. Tata cars will come first, Indica/Indigo.
Otherwise Micra or Polo or i20.