I would say go for Grande as it is been updated n got new features such as immobilizer, additional airbag, auto climate, WOW meter, colour coded mudguards etc etc.
I was in your same situation confused between Corolla GLI n Prius last year! but in the end we opted for Corolla Gli! why?
1- zero meter and no issues for next 2-3 years (depending upon how many people drive or drive style)
2- warranty (not all dealers are stealers when claiming the fault!)
3- U will be relaxed and satisfied that its a new car (whether it is our Beloved brand new Mehru or XLI) u will be mentally happy that u have new car n didnt go for other used imported car)
Then again we have limited choice in Pakistan, all i see on road is corolla, civic, mehran, swift, city etc etc and want something different..
I would have definitely advised you to go for brand new Prius but the price is too high n not legitimate (it is basic model i guess and with that amount of money, can go for Audi A3!)
so my vote is for Altis Grande!
ps: do what your heart tells u to do so! u will never regret your decision in the end! that is true happiness u will get in the end result!