And I will probably ride my 1996 GT Outpost until either I - or it - drops dead. So should I toss all those other lockring tools, or try to sell them?

Also, in a thread that I started elsewhere about my cassette coming loose, several people commented that you need to tighten the lockring until your knuckles bleed. In this thread, lots of people are saying that it doesn't need to be so tight, which is what I remember from previous removals and reinstalls. Which is it?