Spark is a trap from Marcus Family and should be treated very seriously as an enemy of Bitcoin, no matter how much they like to pretend to be bitcoiners. They're not.
Read more and pay attention here (is long but worth reading):
https://unlimitedhangout.com/2024/10/investigative-series/the-chain-of-command-how-facebooks-libra-bank-regulators-and-paypal-built-a-new-world-currency/
Ark is just a joke. Ark will always depend on LN to get out from ASP, using a swap channel, so again will be "gates" from ASP that can easily be KYCed and controlled.
So come the question: if I need anyways a LN channel why would I enter into an ASP ? Ark is just a scam for poor and clueless newbies.

nostr:nprofile1qy88wumn8ghj7mn0wvhxcmmv9uq32amnwvaz7tmjv4kxz7fwv3sk6atn9e5k7tcqyqe3dcmfdhn56wv4jynmnkzzmatmmhzar3a03gz0r0r6akqtg3ggsxgn3hn explain it very well here:
https://stacker.news/items/1275977