I have never regretted buying my set of Bondhus T handle torx bit set, the T27 has seen serious over torque removing others ham fisted fasteners from cylinder bases. The T27 long shaft impact I use in the 1/4 " drive has also payed for itself many times over.
I have a Bondhus T handle hex set as well as a regular set of Allen keys. They are very tough tools. I agree with the over torque thing. A few times I was waiting for the snap of broken, hard steel but it never happened.
They are worth the money.