My HDB property -- should I have gone for an EC back in the days of 2010?

Years have passed since I collected the keys to my HDB. And having already reached the minimum occupation period along with two more additions to the family, and maybe considering one more, I was looking for a bigger property, specifically an executive condominium since I have a 5-rm HDB already of 110 sqm.

And with the massive increase in private property prices, I can't help but wonder if it would have been a better move back then to squeeze all my savings out for Esparina condo vs my Fernvale flat.

  

So I went to do some mathematical calculations as follows: