In the end I chose China Glaze Reggae to Riches, which I bought a few weeks back but hadn't really worn yet.
Here it is before I went away. This is two coats, and a topcoat of Sally Hansen Insta Dri.
It's a lovely shimmery pinky purple, with definite blue tones in certain lights. I found it really hard to capture that accurately in a photo. It went on beautifully, and was very smooth and shiny even before I added the topcoat.
I was really pleased with how well it lasted too - ok, I wasn't using my hands as much as in my normal daily life (no washing up, no typing, no opening tins of cat food) but it still lasted really well and didn't chip at all. There was a little bit of wear at the tips, but apart from that it still looked pretty much perfect by first thing this morning (Friday) when I took this:
And I didn't get bored with it! I found myself looking at it quite a lot, it was so shiny and the colours kept changing beautifully in different lights.
I bought four new polishes while I was away - I'm currently trying out my new Chanel Peridot - ooooh, it's nice! I will post photos tomorrow.