First of all I want to say that we need to be more tolerant about critics. Constant procedure of self assessment will definitely improve us there is no harm in doing it.
Now lets talk about JF 17 Thunder:
It is made of Aluminium alloy instead of composite material to keep cost down.
It is also not very small jet[Dimensions: length 14.97 m (49 ft 1 1/2 in); height 4.77 m (15 ft 8 in); wing span 9.46 m (31 ft 1/2 in)]. Which means Advanced fighter jet like Sukhoi 30MKI (Radar Range of 350km) will see it from 300 km. Which will make it difficult to strike more than 500km inside Indian territory or long range naval missions. It has maximum speed of 1.6 Mach which is very slow compare to any other 4.5 gen fighter jets. It has got one 49.4 kN (11,103 lb st) dry or 84.4 kN (18,969 lb st) with afterburner Klimov RD-93 turbofan or equivalent co-produced WS-13 turbofan. Which gives it Thrust to weight ratio of 0.95 (Thrust/Weight = 0.95) Which is less than one. Which means it wont fly in upward direction (vertically) like Tejas or Sukhoi 30 MKI. It has not got Thrust Vectoring capacities which make it less maneuverable and it will be difficult to dodge missiles. It has gLimit of +8.5 which is less comparing to Tejas or Sukhoi 30 MKI or any of 6 MRCA India is going to buy. It has combat radius of 1,352 km we need more than that if we want to strike Mumbai or Pune or Banguluru or Kolkottaa or Meddrass. It has got KLJ-7 Radar. The detecting range for a typical air target of RCS 3 square meter is > 75 km; look-down-shoot-down range is > 45 km; range for sea target is > 135 km. Do you think you can send Fighter with range of 75km inside Indian territory when they have Sukhoi 30MKI or Mig 29 or Tejas or Miraj 2000 or (one of 6 jest bidding for MRCA competition).
After all research I have done on JF 17 and other jest sometime I feel like Mig 21 Bison looks batter than jf 17 Thunder on Paper.
I really dont want JF 17 Thunder.
Give me something to believe it is batter comparing to Sukhoi 30MKI or Tejas.
After reading all blogs in this topic I still we should go for Batter plane. Instead of buying 300 we can buy 150 but we need something batter than this. We can recover invested money by selling this planes to African countries or other buyers. But like Chinese Air force we don't want to buy them.