I recently purchased the Ledger Nano X and it's an extremely slick device, so far I've moved over ETH, BTC and SOL which transferred within minutes. Really secure device and I'm happy with it from a features and capabilities perspective. You make a good point about being discontinued, I'm not sure on the estimated life of the device, it does have a battery inside which doesn't look easily replaceable, so probably potentially same life span as a cheap phone 3 to 5 years at a push maybe