YSL's Rouge Volupte lipstick (in no 20 - spicy pink) is possibly the best lipstick I have ever used! It is extremely pigmented so a tiny amount goes a long way (which is probably a plus considering the price!).
I was, and still am, very impressed with this product. Not many of the lipsticks that i have previously used have lasted all morning (even with the amount of tea I drink! lol) and actually left my lips feeling softer and more moisturised after I'd worn it than before (no joke!).
I should point out, however, that this particular shade is the only one of interest to me at the moment in the current collection and that for £20 it is rather pricey!