First and last lnmiit is far better than thapar .As everyone knows there are quota for Punjab state students which you will not find in lnmiit. So lnmiit is having uniformity that is the big issue even many nit are having home state quota with huge ranks in 50 k to 100k.

Location wise(important if you want to attend coaching classes for CAT/GRE/GATE): Thapar>NIT-H>LNMIIT

Campus facilites(4 years of life are spent here, so it is obviously important): Thapar>LNMIIT>NIT-H

Fees wise(high increase in fees of private institutes has raised this concern): NIT-H>LNMIIT>Thapar

Placements: Thapar>LNMIIT~NIT-H (If you get into Sapient or better in the end then LNMIIT better then NIT)

Faculty: LNMIIT> Thapar> NIT-H (thapar has some better then LNMIIT, but overall LNMIIT is better in faculty)

Extracurricular: Thapar> LNMIIT> NIT-H(Thapar is very happening specially for its location, hands down)

I have given a detailed comparision hope you find it helpful

Thanks

Good Luck!