I am not new to coating but each coating is new to me as I keep trying different ones and like to experiment w all different types. Here are my thoughts:
Polish Angel Viking Coat - super easy to apply. Easy on easy off. Like butter and leaves an awesome shine. Very good for a first timer. No bad smells. I can’t say anything negative about them. Only been on my z for 2 months so I can’t speak on logetivity.
Gyeon Q2 Mohs - nice coating. Terrible smell. Been on my CLS550 for 11 months. Still going strong and no signs of failure. Would not buy again due to strong smell. It gave me headaches.
Opti coat gloss coat - I’ve used this one many times. Looks great on my AMg43 but starting to wear off. It’s been on for about 16 months. I keep it fresh by using optiseal as a drying aid on occasion. Next spring I will remove and put Polish Angel on it unless I decide to try something new. In my opinion this isn’t really a beginners coating as it’s easy to leave high spots.
G Techniq EXO - wasn’t crazy about this one. Removed after a month. Left lots of high spots which Inhad to then polish off and reapply. This was some time ago when I was still new to coatings so possible user error. Still not a first timers coating recommendation in my opinion.
Car pro hydro - although not a coating - it is easy to apply and you can do it easily in 15 min every 2-3 months. This is what I use to protect my minivan. I give that one the least amount of love although it gets the most amount of abuse.
Just purchased McKees SIO2. Again, not a true coating but supposed to be easy. Will try that on my van next time I wash it

. Have fun w the coating.
Wil