Last year I was planning to buy a good router for home use.
After searching a lot on internet, I have decided to go with the TP-LINK TL-WR740N router because of it low cost and its amazing features.
So finely I have good range of router. TP-LINK TL-WR740N give full signal for up to 3 rooms. if you keep this router middle place you can cover up to 6 rooms without losing any signals. in my phone it is giving full signals by passing two walls without losing single signal point.
it is great choice after all.