Backblaze, Carbonite, or iCloud for cloud backup storage

Redirecting an ealier, related discussion that ended up on the above topic.  That said, I'm finally looking at cloud storage options to supplement my current laptop HD plus two external SSDs (the often recommended 3-2-1 solution).  I've been reading multiple online reviews, and Backblaze, Carbonite, and iCloud seem to keep bubbling up to the top.  I've also searched this forum, but much of the discussion on this topic seems somewhat dated.  I know this is like asking what's the best car out there, so I'll preface that I just need a solid, trusted, basic cloud backup service for my photos (about 2TBs of space) that keeps everything updated in the background.  I'm running LrC on a W11 machine (and drive a Honda) if that makes a difference.