need a new set ht leads on my 1999 v reg classic

as its been sat and weather is crap its rusted up one off the ht leads ok around town but when i start to boot it it starts to misfire .

took it of and cleaned it its better but not so good

1 of the leads is loose i tried to crimp it tighter but its still loose

seen magnorcor ones at 8mm or 10mm

which one should i get

or should i just get bosch ones