- Well...first off....you need AT LEAST 2 layers to get a decent enough beading with ES, one layer would do with the other two.
- OS is a nice beader, ES is a good sheeter and ZCS is somewhere in-between.
- On my burgundy Waja, OS looks nicer, ES doesn't do much and ZCS is, again, somewhere in-between.
- Slickness OS -> ZCS -> ES
- Durability (by observing the beading and sheeting), ES -> ZCS -> OS
- Protection against water spots, contaminant, etc., same as above.
- Ease of application, about the same
I've only used OS & ES on wheels. Very easy to apply as you just wipe it on and leave it to cure, again, under the sun would be best. If use Megs APC to wash, one wash was all it needed to remove OS altogether; ES still got a little bit of life left. If use normal shampoo, I could put OS as lasting around 2 ~ 3 weeks and ES maybe another additional week or two. Again, I have to say, ES is NOT a beader so don't expect the rims to have nice beading, but it does sheet water better than OS.
Local Retail Price
ES - RM 77 - 8oz
OS - RM 125 - 8oz
ZCS - around RM 150 - 6oz
Value for money...well....go figure....
But just FYI, I'm currently testing this on my Chery OEM wheels (which look curiously similar to Waja OEM....

):
Sonax Xtreme Brilliant Shine DetailerA few test by the guys in Europe shows that it's quite resilient to chemical cleaner. Though not as easy to apply as the three above but it's easy enough. And retailing at RM86 for 750ml, so far it looks very promising.
Thanks man, appreciate your thoughts. I'm leaning towards OS put the price is a huge setback - and in the US, Optimum us fairly priced amongst its competitors.