Hello Aspirant!!

First of all, the major difference between those two colleges is SRM Ramapuram campus is a Deemed University where as Rajalakshmi Engineering College is an Autonomous Institution affiliated to Anna University.

Admissions to Rajalakshmi Engineering College is through TNEA, where as SRM conducts separate entrance exams.

Both are well established institutions. But, SRM has a very good brand name in the society and provides world class education to the students. The main feature of SRM is worthful and amazing placements.

These above criterion are also satisfied by Rajalakshmi Engineering College. But, SRM is one step further than REC.

https://www.google.com/amp/s/www.careers360.com/university/srm-institute-of-science-and-technology-chennai/amp

Refer the link which includes info about SRM.

https://www.google.com/amp/s/www.careers360.com/colleges/rajalakshmi-engineering-college-chennai/amp

Refer to link which includes info about REC.

Hope this helps you a lot

Best of luck!!