According to my research phase 8 is top housing society stands with DHA1 in RWP & will be one of the Posh residential address in next 5 to 10 years. There is no match of facilities among phase 8 and other projects In RWP, even DHA2 can't provide same facilities regarding infrastructure, electricity, security etc.
DHA2 only advantage is location which is more close yo main Islamabad. But in phase 8 you can get decent 10 marla plot in 4.5M which you can't get anywhere in twin cities with same life style.
I am sure that those who don't mind location will definitely prefer phase 8 to any other society.
Prices are very reasonable at the moment and many genuine buyers are purchasing there. Those who want to buy for living will be very happy in future IA. Now a days in PAKISTAN "Bahria town " represent same life style as DHA. No other society can match Bahria and DHA in twin cities & not even in the race for next 2 decade.
*my views only based on living purpose.