From my experience:

I would prefer Mothers.

Mothers California Gold Instant Detailer:

- Easy to apply.
- Glossier finish.
- Cost less 500PHP in blade.

Meguiars Ultimate Quick Detailer:

- Hard to apply: I had to buff a few more times to see it shine.
- Not so shiny compared to Mothers.
- Costs 1000PHP in blade.

But it could just be me, I could be doing something wrong. Comments anyone...