Jolla 1 is still a good sfos phone.
Biggest downside is the dark display compared to other sfos devices, so it is more suitable for indoor use.
Lastest update runs smooth to semi-smooth, quite surprisingly.
Android apps in Jolla 1 run comparable to Galaxy S3/S4-ish but lack some of the system integration user know from google natives.
Memory wise, it is advised to not run more than two dalvik apps at the same time.
Like, if you want to be sure whatsapp keeps running, you could run an android navi suit without whatsapp quitting, but a third dalvik app frequently tumbles the house of cards ands some to all dalvik apps close in background.

Most important for this phone, ancelad is a very reliable member and seller