Is a 4 litre flush enough on a toilet?

[JamesJames]

I'm thinking of buying this toilet www.screwfix.com/p/moretti-compact-600-toilet-to-go-close-coupled-toilet-dual-flush-4ltr/81977 but I noticed it is only a 4 litre flush.

Is this enough to do the job? I thought 6 litres is standard.

the content keeps reducing.

I'd suggest taking out the syphon and fitting a Flapper Valve. It gives a quieter and more forceful flush.

You'll also be able to practice getting the lid off. Those buttons are a great nuisance.

Read the customer reviews, but first change the sort to "Low to High" so the dissatisfied buyers come first.

I rather prefer a Twyfords to a flashy stylish import. It may be less cheap.