Scholl is an awesome product, its amongst top compounds and polishes.
Similarly Menzerna is there on the top too.
But dont take Meguiars Ultra Cut easy, its a top compound too, every product has its draw backs... but this one is very carefully crafted product and it is just aimed to perform! It is designed to be used by pros in a professional environment. Ease of use is not on top of the list. People dont use Ultra Cut because:
Cons:
1. It dusts a lot
2. Its working time is less
3. Buffer hop is a problem, specailly with novice machine operators
4. Burns off/flashes and sticks to the paint a lot. Is not happy with high temperature machine polishing
5. Not much forgiving, less polishing oils means surface gets hot quicker and can burn the paint if used improperly
Pros:
1. Amongst highest cut compounds, designed for 1000 grit sanding marks
2. Minimal polishing oils means u see the actual paint condition. No masking, you see the real work that you have done, no sugar coating
3. Well priced value for money
4. Finished like a polish, hologram and swirl free finish with diminishing abrrasive technology
If you wonna go beyond Meguiars Ultra Cut then go for Menzerna and Scholl. They offer similar benifits with less draw backs. However the cutting ability is the same.
And again Meguiars and Ultra Cut is top favorite + used and loved by pros all over the world brand! Id give it 9/10 marks for performance and pricing!