When it comes to Universal top kits I think a lot depends onwhich pole you intend to use them with.
On some of the less expensive poles then I think a universal kit can be a good addition whereas on a more expensive pole it sort of unbalancesthe pole, as well as placing undue stress on lower sections
I have a couple of Drennan 7 tops kits that I use on my Margin pole and those make no appreciable difference, whereas I’d not dream of using them on my main Milo or Preston poles.