I am in love with yellow-based pink lipsticks and I keep buying them. (The first step is admitting you have a problem.)
I already had MAC Fanfare which I absolutely adore and wear every other day, but I picked up Makeup Geek's Adorable, which I thought was a dupe for Fanfare (don't ask why I'm buying a dupe for something I already have). However, the Makeup Geek store says Adorable is a dupe for Chatterbox. So, of course, I had to pick up Chatterbox and see ...
Looking at swatches, I still think that Adorable is much closer to Fanfare, but I do love Chatterbox. It's described by MAC as "bright red-pink". I think it's mostly a neutral pink that leans slightly yellow, but it is definitely redder than Fanfare. Chatterbox has an Amplified finish so it's very creamy and doesn't dry out my lips at all.
I love this color. It is an intense pink without being too bright - it's very wearable. And it doesn't lean particularly cool or warm, so it's flattering on a range of skintones.
MAC lipsticks contain .10 oz of product and retail for $15.