I think there's only a need to buy high-end hardware if you have high-end purposes. Middle of the range is perfectly sufficient for most people.
It used to be the case your hardware would be obsolete within a few years, these days it seems to improve far more slowly. RIP Murphy's Law. I guess that's to do with the minimum size of circuitry, quantum mechanics stuff.
If I can take care of it, I'm sure my navi will be good for a long time.
>old or new?Always second-hand personally, as long as there's nothing visibly wrong with it. Paying the new hardware premium doesn't make much difference, usually.
>>2Yeah pretty much, a few years ago I was very comfortable on a Core 2 Duo with 2 GB of DDR2 RAM. What I have now feels like more than I need.