So very early impressions for me but:
It's much smaller and lighter than I'd anticipated. The reduction in size from PS5 fat, is about the same as PS4 Fat -> PS4 Slim.
Given PS4 Pro was - a fair bit more bulky than even the launch unit, that was an interesting plot-twist.
First party support is just plain better than it was on PS4 Pro. From resolution boosts to other improvements, it's doing more in pretty much every game I've tested so far.
Haven't really tested and third party sw yet (except Stellar Blade, which is almost first party anyway) - and I know that's where most of the 'problematic' upgrades have been to date, so we'll see.
Anyway as far as early impressions go, this is at least as much value as PS4 Pro was (which I concede, is targeting a very specific user subset, and has never been mainstream value prop, even the much lower price of entry that had).