One thing, we must remember that our old enemy India is procuring that up to date tehnology for their Air Forces like Russian Sikhoi. No pakistani Air craft is as good as Sikhoi. Further, they also have offer from USA for FA-22 raptor. There is long list of high tech air crafts that India have. We are given lolly pops by our Leaders in last 20 years. Few Years back, It was hot news that Pakistan is going to Purcahse Eura Fighers to equate that Air Power balance in the region. Then our "Munafiq" Leaders have bribe from America and they postoned saying that these are expensive. Similarly, the case for Sweden saab Grippen. This craft was not purchased as With this Air craft in our Fleet, Israel can be targeted easily due to its long range and endurance.
it is good that we have JF-17 but we must understand technology has gone far better. We must also have other fighters in our fleet. Another thing is that " For existance of Pakistan, we must equip our forces with the latest equipment too at all cost so nothing is expensive for our existance.