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 always come back to KDE for it’s easy of customization. Don’t like the effect that happens when you minimize or maximize screens? Simply go into the settings and download a new one.
KDE can be made to run really light, or really heavy.