This is my second Models Own glitter and this was 3 ish coats with no colour base.
I just did Leighton Denny all for one (or is is one for all??) 3ish coats of Disco mix and Leighton's all for one top coat.
This lasted a whole week with no problems I only removed it as I wanted a change.
The pics really don't do it justice though as it is much more sparkly in real life.
I also think Models own do a great deal on their site as they have sets of 6 for £20, and also run a money off deal depending on how many bottles you buy making them more than reasonable.
I have many more to use yet and look forward to them all.
Get off to http://www.modelsownit.com/ and grab a bargain :0)