@erikmannie I use all the older generation Kinnemetal cutter holders. All in the TPNG 300 size. I've never had a Kinnemetal insert holder fail on me: most of mine are 40 years old and still going strong.
On the
'if you can afford it' front, it is a great choice for a no-questions asked kind of holder. When buying inserts, shop around for 10 packs. I've found a 3:1 price differential on the inserts I like best. Buying in less than a pack is alwasy way more than that (unless your distributor is doing you a favour).