Or you could buy a manual and not have to worry about flushing the transmission fluid and all the other crazy stuff that goes on inside of a slushbox.

off topic>

As for the tools, my process for buying them is much simpler than for anything else. I generally import any electronics with built-in software or with extensive panels of buttons for language and style reasons (home appliances like air purifiers and dehumidifiers on the Japanese market tend to have a lot of thought put into the design, while US-market ones generally look like something that belongs in a garage), and before I buy, I do a lot of research, read reviews, etc. Hand tools are easy, though, because there are no internal electronics and little to no mechanical parts to guess about, and they're basically the same everywhere. I just go to the store, look them over, handle them, and buy the one that seems the most solid and ergonomic. I've accumulated a number of different brands this way and I haven't really paid attention to which they are, or been unsatisfied with any of them.