FYIW - more for other readers than you,
@guzhogi, I've been using Apple Magic Keyboard and Magic Trackpad for years at my desk, first with a mini then later with a couple different macbooks in docked configurations.
Frankly I've been surprised how infrequently these need to be charged - maybe four or five times a year - rarely enough that I don't pay attention - and haven't seen any sort of unreliability or noticable lag. Oh and I believe you can use both in a wired configuration too if you prefer.
Can't speak to other devices though, and I don't game so that may give others a different perception if they do.