Unfortunately I can't comment on how long-lasting the nail varnish is because my nails don't take it very well and they always chip within about 2/3 days, no matter what brand or what top coat I use. It's very irritating!
Overall I would definitely recommend this, especially as it's £1!!! I've never tried any of the other ones but I've found that cream ones tend to have better coverage than pearls or shimmers so I did consciously avoid them. It would be interesting to try them. But as Superdrug are still on my Naughty List I won't be able to try any more for the time being!