I use them a lot. The way you can really tell a good quality print is after lots of heavy use, falling, spilling and scraping lots of glue. The Dewalt heavy duty clamps were ok, Woodriver (Woodcraft brand) ok, but they tend to pull or push pieces of wood when tightened because the clamp heads don't connect perfectly straight. They don't seem to have much play so they come together quite square. Because of this I can glue them on and not have to level the wood as much. They have pretty good strength. Triggers on Dewalt clips occasionally fail or the plastic body falls apart, but I haven't had any issues with it so far. One of them slips sometimes so I'll see if they send a replacement. After using this pack for a while I will buy another pack.