I’ve had three retips from ESCO; one Klyde & two Troikas. The Klyde had a broken cantilever, a low price eBay buy. ESCO just inserted a new section onto the end with a new tip & I was a bit disappointed with that TBH. The two Troikas were straight retips, but they sounded tiered to me, though I tried to convince myself otherwise. One ended up being a low rider too. So, I sent one of them to Goldring for a rebuild and I’ve been very pleased with it, because it sounds really fresh. I note though, on Goldring’s site, they do warn that your cartridge may come back sounding different, because of the new parts fitted, but I have no complaints & will eventually get other carts to them, such as the other Troika & my XX2mkII.