older ones are considered more 'authentic', especially by older people. I do thnk there's something to the story that quality declined slightly into the mid-nineties; personally i'd like to have something from late 80s or early 90s.
rugged? Put it this way. You could bash ripster on the side of the head with it, and he wouldnt wake up for three days.
oh, and the keyboard would still work fine.
typing experience: if you type language sentences, there's no better typing experience at any price, if you ask me. The main problem is today people are just used to quieter keyboards and so it can be jarring to have one in the house (spouse, kids, and neighbors may actually complain about the noise). If you have the sound-freedom though, you'll get used to the sound quickly and miss it when its gone.
As a close second i'd recommend fukka alps by the way, personally I see them as a slightly lighter version of BS in terms of satisfying typing and feedback experience.
If you want them for gaming, thats another story. They werent made for gaming, they were made for people who type 8 hours a day.
For a lot of us, the nostalgia is a big part of the draw. A lot of us grew up typing on these, wrote our first programs on them, our first term papers, and had our first sexual experience while lying on top of one.
I think its probably true that a slightly quieter and lighter version is more appropriate for this century. Unfortunately the keyboard industry is in such a state of retardation, that no one is re-engineering and updating this switch for modern times.