Hi,

In my opinion you should go for Thapar Ece.

Below are the key comparison between Thapar and LNMIIT :-
1. Placements :-
LNMIIT - There's 1 selection in Microsoft, few in Samsung and rest in 3-5 lacs Thapar - Highest was 23 lacs offered to 12 students then 6-7 companies offering more than 9 lacs, Samsung hired 33 students alone and many companies also offered 6-7 lacs jobs.
2. Coding culture / environment :-
In Thapar and LNMIIT there are almost every workshop. Two week and competitive programming competitions(all night long) twice a sem may be, both are good in coding environment.
3. Infrastructure :- Both colleges have good labs, workshops, comparable to iits.
4. Thapar is located in a city where as lnmiit is like 40 mins away from jaipur.
5. There are many societies and events for extra curricular activities in both colleges.
6.If research is what you really wanna do in future, then thapar is a place for you. Yes thapar can make you smart, improve comm skills, might help in getting good job, if u really wanna go into research side you might consider thapar.
7. People from Thapar do go for M.S and MBA in top institutes also.

Now its all depend on you and your interest.

Hope this helps.

All the best.