Laneige BB Cushion in Light ($34) and HERA UV Mist Cushion Long Stay in C21 (Cool Vanilla Cover) are basically sisters. They’re nearly identical in shade and finish: a peachier NC15 and a satin finish that remains a little sticky unless you powder over it. The coverage of both is buildable to medium: capable of evening out skintone, covering redness, and softening (but not concealing) the look of spots.
This is one of the rare instances where Renee and I have the same item. Renee has the Laneige BB cushion in a slightly darker shade. She likes the even, natural, and luminous finish and the light to medium coverage.
Higher-end cushions are ordinarily packaged with a bulky compact and two product inserts (one in the compact and one refill). Because I already had a leftover AmorePacific compact from last summer and because I didn’t want to commit to so much product, I ordered the HERA as a single refill off of eBay. (Single refills are abundantly available online.)
I purchased the Laneige one (SPF 50) at Target, which offers the Americanized shade options Light, Medium, and Dark. The Korean versions are number-based, e.g., 13, 14, 21, 23; I would guess that Light is equivalent to shade 21 based on its similarity to HERA C21. Renee purchased the Korean version from an Amore store in No. 23 Sand Beige. It goes on ashy but oxidizes to match her medium skin tone.
The HERA (SPF 50, PA+++) is the Summer Proof version and claims to last for 12 hours. I find that both the Laneige and the HERA last all day with powder on top (12+ hours), but I haven’t tried wearing them alone for that long.
I’m currently a little tanner than usual (usual=NC15) and these cushions look slightly too pale on me. (But my AmorePacific cushion in 104 Tan Blush is slightly too dark. Argh. It looks great from the neck up though, haha!) Update June 2015: I’ve been reading cushion shade-matching posts on the Asian Beauty subreddit and have noticed a few comments saying that Laneige Light is dark and orangey on NC15 skin. It’s possible that Laneige has changed the color over time or that I was just plain wrong. Please read more recent reviews before buying.
Overall, they’re both great buys.