And additionaly: it all depends what you are doing with blender and how powerfull your desktop is…
of course there are laptops more powerfull than your PC for example this randomly choosen monster for over 6000$:
So if you really ask this question you can search and find thousends of opinions in the net or here on BA… but in the end it all depends on your use case ( … and of course th money… 
)
It may be a better question to ask if someone has a specific experience with any model you may have choosen for further inspection…