Hii,

Well you haven't mentioned the course in which you want to get into but if we compare them on the basis of placements the average placements at LNCT are quite good in comparison to SIRT. Among the private colleges of Madhya Pradesh LNCT has the best pacement records with the highest package of 24 lacs per annum from CSE branch . Also the average package  ranges from 3.5 to 4.5 lakhs.

Whereas of SIRT the average placement record is 2.5 to 3 lakhs and it comes under top three engineering colleges in Central India. There is not much difference on the basis of placements so you can take admission in any of them and in the end everthing depends on your hardwork how well you'll do in your academics.

Hope this helps.

All the best!!