Pilot Kakuno F vs MUJI Aluminium Fountain Pen which one should I buy?

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I’m currently stuck between these two:

- Pilot Kakuno F - ~₹999

- MUJI Round Aluminium Fountain Pen - ₹1,790 (I can get it for ~₹1,190 with an offer)

My priorities are mainly a smooth fine nib, good build quality, and long-term durability. I’m looking for something I can use for years rather than just a casual/temporary pen.

Since the MUJI would be only ~₹190 more than the Kakuno with the offer, is it worth spending the extra money?

For those who have used both, which one would you personally pick, and why?