"I bought these to get me through old joists, if you are working in new wood every day doing loads of holes then yes expensive ones might be worth it for longevity but in this situation cheap or pricey you hit a nail and its game over, one could resharpen but for one pound a go..isnt your time worth more? I find very sharp and although I not a one for disposable with blades and drills etc..you have to wonder if cheap and isnt the way to go if it does the job for more than 5mins"
"Only used a couple of them for a few holes so haven't given them much abuse. They did what they needed to, however I don't know how long the edge will last on them, but at this price you can't complain. - You can always sharpen them."
"A good set for rushed work. I am in the more finer woodwork trade, so only used them for a small fencing job. It does the job, but the hole isn't as clean as it would be for a more expensive set or forstener bits and is also a lot slower, but it gets the job done =)."