Just for the record, JNJ claims their 1-shot is very effective against the Delta variant. They have 2 pre-print publications circulating to support their assertions but afaik it hasn’t been vetted or peer reviewed yet.
Back in March or April, I decided to get the J&J.
Then, they had vaccine quality problems at the Baltimore pharma plant, quickly followed by a mediocre prevention score of 64%, as I recall.
One of these days, I will impulsively walk over to my local clinic and get the Pfizer shot.
But, not today.