Purchase of plot in bahria phase 8 sector g

I want to puchase a plot of 10 marla in sector g.Is this sector is good location wise or can have some constructional fault afterwards?What should b the max price of the plot new market ?B’coz i offered a plot # 424(31 lacs) new commercial area and an other plot #236(28 lacs). Which one is suitable price wise and location wise.