All things being equal, the best solution is the one that takes the least amount of totaltime (including maintenance time for fixing and support).
当所有事情的机会成本均等时，最好的解决方案是选择那个总时间花费最少的(包括修理和维护的时间)。
2
With all the various features integrated into a single package, customers will experience an easier time with purchase, installation and maintenance, as well as reduced total cost of ownership.