Guys, quick Q:
What would you recommend as the best (polished, easy/intuitive UI, reliable) Lightning wallet? It should be able to run on either Android, or Windows (ideally on both, with synching between them).
Made a small payment on-chain y'day, with low fees, and it's still pending...

I hope you can handle it on your PC so you can use "Electrum" is the best (I hope available PC and Phone).
But you can use only a phone and then "trustwallet" for more future and multi-currency.
it is just personal opinion, (right now fee is high all wallet).

You can try
"BTC Transaction Accelerator". right now "Remaining hourly FREE transactions have vanished" you can try next hour it's workable.
Edite.
I didn't know Electrum can do Lightning... But I'm a total noob when it comes to Lightning...
Will look into it, thanks.
BTW, I just used your ViaBTC Transaction Accelerator link, and it worked! Thanks for that too. Merited.