Please bear in mind this is anecdotal.

I own a C2 (the community device that's currently on back order), I also had the 1st gen phone way back when.

The 1st gen phone was great, I loved it. I wasn't really a smart phone officiando, I could do my emails and some other stuff and side load a few android apps if I really wanted. I then went to android for a few years and the app support (and eco system) is great, lots of diversity.

Then I tried to go back to the C2 (which is where I am now). The OS is still a joy to use, has lovely gesture control etc, but the hardware is a bit slow and the whole phone feels a tad unresponsive as a result. I've signed up to the new phone hoping this will solve that issue.

Honestly Jolla phones aren't for beginners. They won't run banking software (thanks to the banks not providing the apps), so I will continue to carry an old Android around as a second device for this purpose. I am trying to persevere because I believe a Linux phone is possible and Jolla/Sailfish seems like the closest to reality at the moment (please feel free to disagree, respectfully, in replies to this).