2 bed apartment on installment in e-11, islamabad

Salamz.. In e-11 sector there are different apartment building being built like khudadad heights, capital residencia, fortune empire, emeralds etc.. Please let me know which is the best option to buy. I want to buy 2 bed apartment on installments. Presently the cheapest one of all is capital residencia. In your opinion which is suitable n more safe option.
Regards,
Tariq