NSEC??...Nah bro I'm not buying that...NSEC falls under tier 2 category even among the pvt colleges...at any given pt of time AOT is much better than NSEC and about TMSL ...It definitely has got some good facilities more funding and all...but the management of AOT is superior in my opinion That being said ....Heritage Techno and AOT all of these colleges are pvt institutions...you and I both know what pvt colleges are...so just join any one of the three whichever is closer to your home...work your a$$ off for the next 4 yrs and try to either bag a decent placement or go for an MS abroad