avio_atul02
Many congratulations, between Air India and IndiGo, without any doubt in my mind I would recommend you to join IndiGo.
As I am in IndiGo, I'm well versed with the working culture and many other things which really don't matter at this time because right now what matters to you is a job, as you have mentioned after a long wait for 8 years, you got through.
But for long run IndiGo is where you will have all the opportunities for your career progression and more importantly peace of mind which really matters in our job.
As you have mentioned the TR amount you will have to pay upfront in IndiGo is a big amount but it will be wise decision and you wont regret.
Hope to see you soon!