I need to travel Chennai city centre to Bangalore city centre, and I see that there are two viable options. Which one would you take with a large suitcase and why?

5 hours by train, Shatabdi Express in 1A for Rs 995 (downside: leaving at 6am)

or

4 hours by air for Rs 2500 including taxi fare:
(Assuming no delays,
30 min city to MAA
1 hr wait for flight
1 hr flight including wait for checked baggage
1.5 hr to BLR to city)