I have tried out Gnome, KDE, Lxqt and Xfce on a regular desktop and all of them feel nice. I haven’t tried many DE’s on a laptop.
Are there any particular DE’s you like on a laptop, because of things like power consumption and efficiency that would not come normally into consideration for a desktop?
I haven’t tried Gnome since they trashed the UI ;) and I wasn’t ever much of a KDE fan so the only desktop I have ever used since the demise of Gnome 2 is XFCE.
However I’ve switched back to Window Maker (a window manager) on my main PC and on my VM’s and I may do so on my laptops too. I don’t really need a desktop so to speak, I just use
wmsystray
to add a system tray and things like NetworkManager, bluez etc all end up there giving me what I actually do use of a desktop.