MQA ? Pono? What's better than the CD?

The Pono format looks to me to be much better than an upsampled CD file, as the AD conversion has been re-done. Because the Pono format is .FLAC it should be universally playable (i.e., not just by Pono players). Comments on the Pono format?

I have stumbled across MQA. Has anyone had experience with this? Better than Pono? Just another selection?

I don't see how the market can support too many formats, as the albums are going to be need to be re-mastered  and A->D for each format.

Are there are formats out there that have a good selection of re-mastered albums?

~Jim