the Dunlop ERGO LOK is about the most sensible & least costly solution to overcome worn out strap slots that give way under pressure. sadly, it doesn't fit all guitars, at least with my PRS...
Dimarzio's clip lock doesn't creak but it leaves an unsightly portion if you remove the strap when playing sitting down.
Planet Wave's 'Planet Lock' strap is another sensible solution since it adapts to your existing strap buttons but similarly, it won't fit PRS...
:smt023 PS: thanks for reading the review stuff, everyone!