I use the Tectron Tools, which I believe are no longer available. I have had them for a long time and they work well for me as I know what I am doing with them. I also have an Astrosystems Barlowed laser but that only ever confirms what I did with the Tectron Cheshire was spot on.
The new systems like Catseye and Glatter are obviously a lot newer and an improvement over the Tectron Tools. They are also likely to be a bit easier to use, I would assume. That having been said I have no doubt they would give me exactly the same result I get with my old boat anchors
Cheers,
John B