I was where you are now about 2 months ago re: clear bra, ceramic coating.
The biggest determining factor will be the installer experience. If they are experienced, PPF will be roughly equivalent. I happen to get Xpel Stealth because I wanted to have the matte finish. I did also get the Ceramic Pro coating for the hydrophobic properties and ease of cleaning. You won't go wrong with either product; I think Xpel has a 10 yr warranty on product defects i.e., peeling, yellowing, cracking, and Suntek I seem to have read somewhere that they have also increased their warranty from 5 to 10 years as well, but I can't find where I read that.
Anything is better than nothing, I think, and I was planning to keep the car for many years. so I went ahead with the investment.
Congratulations and good luck!