These new chips are great which ever one you get!!
Yes overclocking is very good on these chips and you can get good results on stock CPU/air fans, just Google overclocking and the cpu chip details and you are bound to find guides and details of results. (close to 4ghz is possible!!) Or try http://www.tomshardware.co.uk/
Like mentioned above a good PSU is key so if you intend to upgrade your graphics card or do serious overclocking you should consider it otherwise you will be fine.
Hitachi drives have always been good to me (avoid Maxtor!!). I have an external Western Digital drive and I'm very happy with it. I would always buy a Hitachi drive from now on (internal) with Western Digital as a good second choice!!







