which e-forms with formula without formula

[sharif lakhani]

I wish to know which computerized from is better to fill ie with formula or without formula. Further I discovered that without formula does not have wealth statement in it, so we have to submit separate WS?
further I discovered that with formula form calculates surcharge on average basis which is true in case of uniform salary during whole year.
It means those who don't have uniform salary during whole year they should go for without formula form ?
thanks