You get a crapload of tools with Halfords Pro but there’ll often be stuff you don’t actually need, tons of imperial in there (the deep sockets and torqs are rarely very useful, but the thing with these is that when they finally become useful, it’ll be at 9pm on a sunday night and you’ll be rather glad you’ve had them clogging up the toolbox for 5 years). All decent stuff, good warranty. Downsides are 12-point sockets, and the shiny finish isn’t as good to grip when you’re cold or covered in car blood, or wearing gloves. That sounds like a nothing difference but imo textured sockets are really useful.
I can’t fault the Bahco kits, they’re smaller but all the effort goes where you need it. Arguably a bit hefty, but otherwise excellent. I prefer my lovely Teng, Facom and old Brittool stuff but it was quite a bit more expensive and really not massively better.
If I had to replace all my tools tomorrow I reckon a lot of them would be bahco. In fact I’ve lost a bunch of my 1/4 inch stuff, I ought to get that wee bahco kit!