That Klein stripper looks like the way to to. At home, I use the awful one shown in the original post...but I've been using that style for about 45 years, so I've finally got the hang of it. And I use a crimper that is not a multi tool, but it is also not specifically made for insulated terminals...yet it crimps very well.
At school...the electrical folks usually use a multi tool to strip, or a smaller "sized" stripper. And I finally got them to use the same type crimper that I use at home
As usual, the tools are not quite as important as the training. Skilled workers can do a decent job with lousy tools, but an unskilled worker can mess up the job with the best of tools. The best bet is decent tools, and good training. No need to go crazy on the tools, though.