NDLS-BCT fav depends upon timings...
Like some will like to board DLI early morning and reach BCT early morning to avoid rush in both cities.
While some pax will like to leave DLI in night and like to reach BDTS in evening, though its not comfortable to reach various suburbs in evening times.
Cleanliness and coaches-wise Golden Temple is better, as Swaraj has...
more... too much old coaches..
For pax travellinh north of Delhi, Swaraj is better, as Golden temple has very odd timings for intermediate stations like UMB, LDH etc except ASR.
Overall, both are 19-20..just a little bit here and there..
In the NDLS-BCT sector, Mah SK runs on same slot (little +/-)as Swaraj...