I use several different clearcoats. Many times the clearcoat I chose has to do with where the clearcoat is being applied. And is driven by cost.
If I am building a high end show car or lowrider, I use Splash 2k clear. It is kind of expensive, but it cures harder than any other hobby grade clearcoat out there. And it lays down super smooth. So smooth that if I do it right, I don't even need to polish it.
Most of my scale car builds get my favorite clearcoat. Mr Super Clear UV Cut, from Mr Hobby. This stuff is so good, and so versatile. It is easy to apply, and I get great results from the spray can. I think that is my favorite part. I get great results and I don't have to clean an airbrush.
Then when I need a good clearcoat on pieces and parts like show car suspensions and engines, I choose from a couple different things based on whatever I have available. I'll use the Mr Super Clear in the spray can I talked about above. But if I want to save money I'll use Createx Gloss clear, or I'll use Tamiya LP series gloss clear mixed with Mr Hobby Leveling Thinner.
The Createx and Tamiya LP options are much cheaper than the 2k clear and the spray cans.
I'll also use Createx gloss clear as a mid coat when I am doing a fancey metal flake paintjob. The deep metal flake paint jobs take a lot of steps. Primer, then color coats. Then the mid coat is the Createx gloss clear with metal flakes mixed into it. Then I'll apply 2k clear over that for ultimate gloss.
And since the OP is in Austrailia. I would look at the SMS product line. They make excellent paints and clearcoats. And they are based out of Austrailia.
I have never used Future or Pledge. I see people getting great results. but there are so many clearcoat options out there, I don't fully understand why someone would use a floor coating instead of a clearcoat.