I recently got a Lenovo 530S (14", WQHD) laptop and I've been very happy with it. However, I have one small issue.
I have Manjaro KDE on dual boot with Windows 10. I've configured GRUB to only show up if the left shift key is pressed. Whenever I need to switch from an OS to another and I enter GRUB, I'm always annoyed by how slow and unresponsive it is. It takes 1+ second for a key press to register. Here is a video I recorded of the behaviour:
(in hindsight, I should have recorded from further back to better emphasise when I press a key)
Another issue I've had is that sometimes Manjaro won't boot. After the bootloader, it just ends up at a black screen, not being able to do anything (not even switching TTY). Usually I restart my laptop a couple of times and it boots eventually, but it's annoying.
I've used Manjaro before and I didn't have these issues before on various laptops.