Ah. The last review I read of a Lian-Li case, the airflow was very decent. As long as you removed the front dust filter. Rgb/argb fans might be all the rage for looks, but their performance is severely lacking, due mostly to the fan requirements. Composition of blades and materials, motor housing reductions for lighting pcb's and wiring, basically its a choice of looks or performance, you aren't getting both.
So adding a dust filter, is going to destroy both the looks of the RGB fans and the already disappointing performance.
That said, I own a $250 Lian-Li case which does not come with any dust filters at all, but because of the airflow and requirements, the fans generally don't exceed @ 450rpm, so dust accumulation isn't really an issue.
The Corsair might have sweetness with its airflow, but imho, it's not a pretty case. The front (especially on the silver/white) reminds me of 1960's bead curtains.
Hands down for me is the Meshify C. Use 3xfans in front and a single rear, leave the top enclosed. Any additional fans would be a single top-rear. You'll not need more, that'll just confuse the airflow patterns and actually reduce its overall effectiveness.
in MY humble opinion. Take it with a grain of salt. Tastes differ from person to person.
'Better' is rather subjective. All 3 cases are very good for airflow, so much so that there's not much to differentiate the 3. So 'better' in that respect becomes a personal aspect. Which fits your build, what gimmicks (like modularity or usb3.1/3.2/C) do you find more attractive or useful, which look do you prefer, which TG offers the better viewing or non viewing options etc. Weigh the Pros and Cons of each. Figure out what you really want, what you can live with (or without), narrow down the reasons to keep or dump each choice.
The 'better' case will be the winner, 'better' for you personally, overall.