From my own experience I would go with NGK as well.
Toledo Man
West Yorkshire Area Organiser Meetings take place on the first Wednesday of the month at 8.00pm at The Railway, 1 Birstall Lane, Drighlington, Bradford, BD11 1JJ
2003 Volvo XC90 D5 SE (PX53 OVZ - The daily driver) 2009 Mercedes-Benz W204 C200 CDI Sport (BJ58 NCV - The 2nd car) 1991 Toyota Celica GT (J481 ONB - a project car)
Former stable of SAY 414M (1974 Toledo), GRH 244D (1966 1300fwd), CDB 324L (1973 1500fwd), GGN 573J (1971 1500fwd), DCP 625S (1977 Dolomite 1300) & LCG 367N (1975 Dolomite Sprint), NYE 751L (1972 Dolomite 1850 auto) plus 5 Acclaims and that's just the Triumphs!
There are some nice sets available from Magnecor. A suppressed type with decent plugcaps.
They also sell a very nice and original set for the sprint. Quality plugcaps and if you replace the original hat's that seals the camcover the looks are original but with a modern cap. I did develop this set with magnecor as for some sprints i would like to have the original look so with a bit of experimenting their side and tryfitting my side it became a nice set. MikeyB did send an original plugcap at that time for me to magnecor so they had an example. I do not have any shares in magnecor but if you ask for a dolomite sprint set original type you will receive it. If you are so very very happy with it and overwhelmed any donations are welcome ofcourse
You can have them made with the plated copper core black non text non resistance leads or with the black resistance lead they use in the normal set.
I'm running piranha leccy ignition with magnecor leads and twin electrode golden lodge plugs which works well, I normally run Ngk's but the golden lodges where just there, I believe Bosch super 4's will fit a sprint,not sure how the 4 electrodes would make much difference though.