I’m not familiar with some of the handle/adapters mentioned but a couple of cautions.
One, I’ve seen some that only allowed gripping the last few inches of the tool shaft. I dislike this since it puts the sharpened end a longer way from the handle, sometimes making it harder to control detailed cuts. In addition, as the tool is sharpened the length extending from the handle gradually changes. I make my handles with deep holes so the tool shafts can be embedded as far into the handle as I want, leaving a shorter length exposed giving more control in some situations. And as the tool length is decreased by sharpening, I can adjust it in the insert to keep the cutting edge extension constant. I describe this in the document I posted. (I do have a few of Doug Thompson’s handles which allow embedding the tool deep into the handle.)
Two, at the time I started making handles, the insert adapters I found for sale were machined from cylinders far larger in diameter than needed. I started making my own inserts at a time when all those I could buy were 1” in diameter regardless of the diameter of the tool shaft. I didn’t like using a 1” diameter insert to awkwardly hold a 1/4” diameter tool shaft, when a much smaller diameter insert was more comfortable and easier to control. However, I admit to not following everything that’s available today.
It’s also a lot cheaper to make the inserts and handles from scratch! However, it does take a little time and the way I make them requires having a few sizes of long drill bits.
JKJ