i have both some halfords pro torx bits and also some cheap US pro ones which are OK ish for light jobs, but i managed to twist one of the US pro torx doing some bolts on a clutch pressure plate, now im thinking of just buying a just a few of the main sizes which i use, anything thats small wont need much force so my halfords will do for them and ive never used anything over a t55 so far. the cheapest option i have seen so far is wera torx bits were you get just the bit and use your socket for them to fit into. i have seen a bahco set for around £33 or so but below is an example of what i mean, dont think ill get better value than this. unless anybody in the uk knows of any decent brands of offer or somthing right now
below https://uk.farnell.com/wera/0506612...K-SHOPPING-SMEC-Whoops-Newstructure-31Aug2020
below https://uk.farnell.com/wera/0506612...K-SHOPPING-SMEC-Whoops-Newstructure-31Aug2020