I had a pile of digital timers. They were fine, but you have to faff about changing the times every now and again and, of course, the clock change. Anyway, I bought some TP Tapo plugs too and they've been fine (very occasionally, Alexa seems to forget one of them, though it's still there on the Tapo app and wifi and works as expects, so I assume an Alexa issue – the usual turning it on and off restores Alexa's memory).