Just a warning with that one - if you unlock it, it will never receive another Sony OTA, and there's no re-locking. Probably less of a problem now that it's out of support. Sailfish was also really rough on it.
It's pretty decent hardware, mine still lasts 2 weeks on standby. Granted, I don't do much with it, I just use it to test out new lineage updates. No SIM in it. But it does receive some push messages through MicroG. I'm surprised how well it aged.
Not a fan of its hardware design though, with its overcomplicated ridges, seams and edges.