I am getting just one to try first a Sealey rated at 110 NM.
I have a decent Britool Torque wrench so I will see how it compares, looks as though there is a knack to using them correctly.
Then will need a 17 mm Impact Socket - I will try to get one from Halfrauds as they do some stuff with a lifetime warranty at sensible money.
A few years ago I returned a Teng 1/4" drive ratchet that had broke (due to misuse) I had no receipt but the case etc was in clean condition even though it was 3 years old. Whole thing replaced with a new set - no quibble still good now about 10 years old!