Best LTE service in Pakistan

We all know that 4G has been launched in Pakistan and the three service providers to launch it is PTCL, Zong and Warid. When you are in a city which has all three of these service providers how do you know which one is the best. It would great to get some feedback from users of Waird, PTCL and Zong LTE service to what kind of speed they provide and the ping.

I have used Zong and to be honest it is not so great and I would think that if you really want a 4G connection you should wait some time until the service is improved or the coverage is wider in Pakistan. Currently I would say that 3G services are much better than 4G services.