I have two choices for a keyboard. I have a laptop keyboard and a cheap rubber dome. I can't really tell which is better. Which should I use?Between those two, if your laptop keyboard doesn't have ghosting issues then I would recommend it because it has shorter bottom out distance than rubber dome. In my case, I feel my stamina drained quickly when I play with rubberdome or even mech keyboards I don't know why:/
Another problem I have is my reading on 7k. I always feel like I'm just mashing keys.
And about 7K reading, I can't really answer bcs I still suck at it D: . But maybe if you want to improve single note reading, try bms conversions. Or if you want to improve LN reading play more LN maps, tbh I found LN maps are good for finger independence because one time you have to press something when the other fingers are pressing other pattern beside it (layering).