Travel from London Heathrow to Karachi

I travelled to Karachi from London via Turkish airline.
First I took train at 6:18 am from Ipswich (UK) to London Liverpool Street.
Then I took tube to airport. We reached in time to airport.
It was very busy as usual. Airport employees were cooperative and friendly.
Oh! I frogot to tell you that one of my friend dropped me to Ipswich railway station.
I was carrying my laptop too and 2 other baggage.
Flight was smooth to Istabnul (Turkey). Food was nice and crew members were friendly, though food was not good at all on return but crew memberes were friendly.
It was bit hot in Turky and hotter in Karachi. We were given Airbus from UK to Istabnul but Boeing from Istabul to Karachi. Air bus is much much better then boeing planes. From UK to Istabul its about 3:45 hrs journey while from Turkey to Karachi its about 5:45 hours so Turkis airline should think changing palane i.e they should provide Airbus from Trukey to karachi as its long journey.
Flight arrived on time to karachi though it was half an hour late on returning journey.
I'd like to travel with Turkish Airline from UK but won't like to use Turkish airline on returning journy again.