I use them and have no problems. Love'em. Lovely assortment of colours, not too thick, not too thin. To date, I've been very satisfied.
The "Nailite" polishes that is, I 'assume' that Sensual World is distributing that very same line as the USA dist.
MIND YOU, they do have a brand that is specifically for the UK, and those ones, I'm not too fond of. On the thick side. But then, the samples I had was from when that line first came out, and they might have made adjustments since then.
Ask them for a sample, and see what you think for yourself. Best way to know and to each his own, so what one likes another may not.
hth's