https://play.google.com/store/apps/details?id=fr.acinq.eclair.wallet.mainnet2
It's easy to setup, but quite hard to actually send payments! Unless I'm being dense.
How does one - in theory - select a 'good node' as opposed to a bad one? When I say 'good' I mean one that can handle your proposed transaction size, expiry, htlcs vales, etc?
Finding it a complete lottery, with some nodes (lots of connections, local, high values) automatically closing my channels, while smaller acinq nodes often fail due to expiry/htlcs errors...
I believe it has an "autoconnect" feature to connect you to an acinq node. Also, you can go on a lightning explorer and select a node with good channel connectivity, because those nodes are likely to be reliable and have the capacity you need.