Buy things. We should not expensive, only buy principle, but in most cases, expensive things definitely better, so the measure should be cost-effective. Within the range you can afford, can give priority to cost-effective, even if your point does not matter. For example, in recent years to buy these things:
Original Cherry mechanical keyboard (red tea axis and axis): the grid, often write the report before the switch materials, mechanical keyboard typing is a real pleasure, and now need to knock the code, the more inseparable from the mechanical keyboard. Both keyboard buy four or five years, or as always, easy to use, only periodically need to remove the keys to rub, or are dust.
Retina MacBook Pro: beginning with 15 torr little brother came back from Hong Kong, the student price of less than 14,000 to 18,000 mainland licensed. Now four years have been used only once for a battery and a power adapter, see the paper write code artifacts, and then for four years. The only drawback is the Mojave after the upgrade system, Mac without official authorization N card driver, you can only play the game in Win.
iPhone: start with the end of 14, also spent more than four years, the middle replaced once the battery, and the battery to die now. But in recent years, quality control iPhone is getting worse, more and more low-cost, next phone might be considered for Huawei millet or camera phone.
Original: Large columns and more cost-effective to buy something