I like PAL and how it's more my preference (all rewards are unstaked, it takes only 4 weeks to unstake.. etc) It's also powered by a powerful STEEM community I was part in since my start (more like lurking,) I know if I found a problem I'll get an answer in PALnet Discord.
I didn't notice the problem of disappearing comments, though I mostly use eSteem rather than Palnet.io so maybe that's why?