Most of the Dragon ship kits are excellent, as well. The Gleaves-class destroyers, on both 1/350 and 1/700 scales, are superb. I haven't seen the Scharnhorst or the German destroyers, but I hear they're just as good.
Some of the Trumpeter kits are good; others not so much so. Trumpeter's USS The Sullivans is widely regarded as a dud. But I'll stick my neck out and say that the Trumpeter HMS Dreadnought is the best plastic warship kit I've ever seen (though I don't claim to have seen anywhere near all of them).
I have exactly one armor kit in my stash: the Dragon M4A3E8 Sherman. To my inexperienced eyes it's mind-bogglingly good; until I opened that box I wouldn't have imagined that so many parts could be crammed into one little tank. But the experts seem to think the Tasca Sherman is even better - and I'm not competent to argue with them.
We need to remember that most of these companies have been in business for quite a few years. Generally speaking - with plenty of exceptions - they get better as they go along. But some of the kits on the market are quite old. An example that sticks out is the Revell 1/540 USS Missouri. It's in the Revell catalogue today; it was originally issued in 1954, as Revell's very first ship model. By modern standards it's a slightly amusing piece of junk. On the other hand, some of the recent ship kits from Revell Germany are superb. And some of them are reboxings of Zvezda kits.
We now have available to us a resource that didn't exist when I started building models sixty years ago: the Web. Nowadays I rarely buy a kit without first googling "Tamiya uss whatever review." there seem to be literally thousands of kit reviews out there.
Youth, talent, hard work, and enthusiasm are no match for old age and treachery.