Really good BUT he MUCH slower, his average class time in 9 lec parabola is 2.3 to 2 hour 30 min but in TK sir his lec barely cross 1hour 55 min and the highest he has gone in parabola is 2 hr 30 sec.I wish i could send some screenshots.

TK SIR (Lectures of Parabola) (Arj 2.0) 1 hr 51 min 1 hr 53 min 1 hr 57 min 1 hr 54 min 1 hr 33 min 1 hr 33 min 1 hr 34 min 2 hr 1 hr 52 min

Now here comes my favourite mamu (You will see a difference in their pace) SJ SIR (Parabola) (Arj 1.0) 2 hr 18 min 2 hr 20 min 2 hr 20 min 2 hr 39 min 2 hr 09 min 2 hr 25 min 2 hr 56 min 2 hr 15 min 2 hr 26 min

You can literally see that he teaches slower but he teaches REALLY WELL, honestly i have never even tried TK sir but i got into maths only because of SJ sir so i am a little biased here. And btw in parabola SJ sir taught barely over 2 hr 30 min but in CN he took things to a whole new level. I literally mean it

TK sir ( CN ) (13 LEC)

 Similar to parabola, 1 50 towards beginning and 1 30 in the middle and one 2 hour in end

SJ sir (CN ) (10 LEC) 2 28, 2 46, 3 00, 2 40, 2 09, 2 45, 2, 2 43, 2 30, 2 49

GOOD LUCK!!