Sir g-14/4 is the best option but that is very very expensive..In 7 million you hardly get a 25x50 plot..even that is more than 70 lacs..
I wont recommend g-15 too much as its location is good but development is really pathetic now..
Sir actually due to the difference of location price difference is there..Secondly some plots of L block dont have possession so they are a bit cheaper and when possession will be there they will also be equivalent to expensive plots...
I think dha ans bahria are the best option for construction after zone 1 cda sectors...