The choice of your institute depends on what you are expecting from it. For instance, if you are just after the brand name, then the IIT tag will come to your rescue. However, if you are on the lookout for quality education that will match your requirement to pursue a career in architecture, then SPA is a very good option. The only drawback is that there are no Institute placements and you need to have a good portfolio or Architectural background to get a good job.

If you are after placements, IIT Kharagpur and Roorkee can guarantee you very good packages, sometimes even in crores. The issue with this option is that you will have to first clear JEE Advanced and then AAT, after which only you can get admission.

I have told you the positive and negative implications of both the institute, make a wise decision.