The whole debate on voting systems is complex, and it is worth getting your head round Arrow's Impossibility Theorem. However, it is also important to understand this theorem does not say FPTP is better.

Over-simplifying, the theorem says all voting systems have flaws. But, recognising where and how and how severely they go wrong, you can choose a system ;with open eyes' to its limitations.

I head a great lecture by John Curtice a month or two back explaining how FPTP has failed to achieve what its supporters claim with any reliability for decades now. Hid did not recommend any specific voting system, but he did say many of the claimed benefits of FPTP are spurious.