My honest, humble opinion: stay on 14.4.2. 14.5 has introduced some odd issues that have caused the bad battery life you have heard about. Phones getting hot while doing simple tasks like browsing the web, causing battery life to drop drastically along with others seeing performance of the phone come to a crawl. It seems like they might be making some headway in resolving these issues with today’s latest beta version, but 14.4.2 is a great version and if it were still possible to roll my own phone back to it, I would do so in a heartbeat!
My recommendation is to stay put for a few weeks and watch here to see if Apple releases a 14.5.2 to address the battery life issues and/or releases 14.6, at which point you should be alright to update.