I think you might be looking at the whole issue wrong. If you assess what your intentions are as far as how much you intend to work on stuff throughout the course of your lifetime honestly you will come to the conclusion that like as not as long as you are working on stuff, you will always be buying and adding more tools to your collection on an ongoing basis. At least that was what I determined at around 16 yrs of age, I am 47 and I have never totally stopped adding tools to what I have. The more tools you add the more complex projects you will find you are comfortable tackling.
Following my logic I have never made a goal of making my tools all one brand or another, there are many I like so I have saved a lot by knowing when I am looking at good quality tools, knowing good brands, having a good sense of used worth, etc.
The bottom line being if you are serious about doing a lot of mechanical work I will never understand how guys can only buy metric tools and no standard, or vise verse. I want to know that whatever I choose to drag home (within reason) that for the most part I will be well equipped to deal with it be it foreign (metric) domestic (standard) very old (8pt sockets) or big stuff (3/4" set) I think you should develop a plan for buying all the tools (yes chromes and impacts) you could reasonably need to get the work done.
If you put yourself in a little box regarding the range of tools available to you in your box, the jobs you take on will be limited to your limited range of tools as well! So plan on buying both and just keep on adding, they don't always have to be new and shiny, or the very best brand, the more tools you buy, the more you will begin to see the whole issue more clearly.
