Ok. So I've explored various options of home networking setup for my new house but they either don't meet my needs fully (WiFi, HomePlug) or are not available for purchase in retail shops (HomePNA).
Given that I have to repaint the entire house due to wear and tear (the house is seven years old) plus the color combi used by the previous owners was really aweful (more of the latter than former actually), I took the plunge to get my house wired up for Gigabit Ethernet. This is going to cost me some $2k for just 7 network points around the house. Not cheap but at least I no longer have to worry about bandwidth for the next couple of years.
For cable type, I've selected Cat 5e rather than Cat 6 due to cost reasons since there is minimal difference between the two. Initially, I had wanted to prepare for the next gen network (aka 10GBaseT which is supposed to go mainstream in the next 5 years, so I'm told) since I'm unlikely to want to relay cables anytime soon. But that requires the use of Cat 6a type which costs yet another premium.
Well, now that the backbone architecture has been decided, its time to start sourcing for a couple of Gigabit switches and NICs for my PCs!