Maybe I will be the odd one out here, but to me the different crimpers serve a different purpose. The Klein's work well for larger, more common stuff. However, if you get into small wires, lighter duty terminals, that require almost a machine type crimp(for making weather pack connections, etc.) then they do not do what others will do. For 90% of car stuff they are fine, but there are some instances they do not fair as well. But it all depends on what you are doing, materials, terminals needed, quality needed etc. Note: I would not buy expensive crimpers....shop around, don't buy bargain basement, but not gold plated either.
I have found that the quick strippers work well until dealing with small or old wire too....the type you stick the wire in and squeeze the handle fast.....better and faster than the old squish and pull....but then again, I normally use a knife and go by feel unless I am doing a lot of connections. Soldering I could take it or leave it....