Difference between i10 : asta & manga& others?

-I wnat to buy Hyundai i10. Can any one tell me :

1. is it a worth buy ?

2.How much will be on-road in pune

3.Difference between Asta ,magna & other i10 varieties.

my budget ib 4.5 to max5 lac.i 10 having different varieties like kappa, asta, magna