Well, first let me say I´m very thankful to all those who work hard in their free time to create new scenery and share it with us (I wish I was talented enough and had enough time to do it myself).
And in particular I´m very thankful to JR, the deveolper of this specific airport. I was one of the first to (effusively) thank and congratulate him for it. His airport is very good, and I enjoyed it until the payware version came out. In fact, I still use his great Las Palmas / Gando airport, since there is no payware available for it that I know of (I can´t understand how such important airports as Las Palmas , Tenerife Norte or Málaga have been ignored by payware developers for over a year).
That said…
Yes, the payware version is much better than the freeware, and in my opinion is totally worth the price. I fly to La Palma every year in real life (last time two weeks ago, just before the volcano erupted), and really love this scenery. It´s not perfect, but it is very good, and I feel like I´m there again thanks to the little details in the payware which are missing in the freeware.
With most freeware, I can live with those little inaccuracies because if I have not been there in real life, I don´t know what I´m missing, and it is easy for a freeware to be “good enough” for me. But when an airport is an important part of your life (I know it sounds corny but for me, it is, it´s the moment when I realize I have arrived to a special place), I want as much realism as possible, and payware level products become important.
So, If you have not been there in real life, this freeware is really good enough. If you have been there, or want maximum realism, you won´t regret it if you get the payware.
Best regards.
PS) My warmest condolences to those suffering in La Palma right now. It´s really painful to see what is happening.