NYRB vs. PR
I don't think this is a fair fight. The Paris Review (PR) is quarterly, and began in 1953. The New York Review of Books is fortnightly, and perhaps surprisingly, is younger. It was founded in 1963 during some strike or other. Perhaps NYRB vs. LRB is a fairer comparison. Anyway, the NYRB is $80 a year, give or take. The Paris Review is $44 per year, for 4 issues.
The PR and NYRB are both available as Kindle Newsstand subscriptions. For all I know they are available in other digital guises too, but I suspect such readers will number few in their target demographic. Some publications, such as the TLS, are just better on paper.
I got a free NYRB at the London Book Fair last year. It seemed very dull and old-fashioned, judging from the cover. That's a mistake, on your part and theirs. The PR looks much fresher. Their website is also fresher.
If you're trying to choose between the TLS, the LRB, the NYRB and the Paris Review, you're in big trouble. They're all excellent. Brit readers should really read one of the two London papers. Americans, likewise, should get one of the other two.
On balance, I chose the Times Literary Supplement (TLS) digital and print editions, paid quarterly, plus the Paris Review on a digital only annual subscription, which is better value than the print edition.