Unfortunately I don't have a shed full of NOS Champion/Lodge/KLG spark plugs and I don't know of anyone who can sell 'em to me 'over the counter' , I have to go with what I can reliably get my hands on fairly quickly (or not use the bike...).
I think all 'modern' manufacturers make to a cost - last time I bought Bosch plugs for the BM they were made in India - and I could only get the right ones from a BM dealer and at BM dealer prices, so the BM has been on NGKs for years. I haven't noticed any change in the service life of the plugs - the last couple of sets have lasted for several years. The NGKs in my modern(ish) Triumph last forever, as do the NGKs in my 'A'-series-engined Austin Metro.
I did use to only use Champions in my older non-German vehicles but since I've not been able to get those locally (many years now) that had to stop. However, if Champion/Bosch/Denso were easier to source than NGK I'd change again.
The Champions weren't always reliable, especially in the old Brit bikes. I think we tried some Lodge plugs without any more success - and I'm going back to experience from the early 1970s here, which pre-dates the supposed change to 'unsatisfactory' plug manufacture cited by one of the sources in the 'Green Spark Plug Co' article. (I'm not going to put that down as complete rubbish but I haven't noticed having to change the starting technique on the Ariel from what I used to do back in 1972 - I will admit though that I've never had the chance to try genuine 1950s spark plugs.)
I have heard of problems with 'fake' spark plugs (ie poor quality items branded and sold as coming from one of the established names) - I'd think you'd avoid that if you stuck to NOS plugs but these days somebody might well end up faking those as well.
'55 Huntmaster, '56 VH, ' 51 VH, '80 R100RT, '00 Sprint ST (but all those Ariel parts can only make one running bike...)