I had no experience using platinums prior to purchasing our latest Toyota racecar that had them.
On inspection they were very fresh, so used them.
By rule, we gotta run totally stock ignition if we run fuel inj.
I've always had a spare set, ready to put in, but never used them.
4 seasons, read/inspected them lots, not a miss, not one single mis-fire, bounced off the 7k chip a bunch, - won 2 championships with them.
No complaints here .