Best config under $550 or INR 25000

Hi,
lot of people got confused in my last thread due to currency, hence starting this thread again.

I want to use PC primary for vedio editing and playing 1080p HD moveis, gaming is secondary.

here are list of component I need:

1. Motherboard:--one which is future ready, I can upgrade system for upto 2-3 times performance, with usb 3.0,Sata 6gb/s support
2. Processor:-- A good one to last for my current needs for next few years
3. PSU:--to power 1 DVD writer, 1 DVD combo, upto 2 internal HDD, 1 portable USB HDD and 3 USB peripheral devices
4. HDD:- 1TB Esata
5. RAM:- Optimum for current system, I can add extra later on


I already have 22" samsung monitor, DVD writer, 2 PATA hdd(40 and 160gb), 1 USB HDD(300GB), 2.1 speakers

I want to build a system a which is future ready and such that I can start with optimum system and upgrade to add up to a very powerful system.

I am in a dilemma over AMD phenom II X 6 based and Intel I-5 based system, as to which will be best to start so do also let me know why I should choose one from another.