i had sheer cover, but since i don't wear makeup everyday, the whole shipping/club membership thing just didn't jive with me. now i have bare minerals. i like its purity and haven't really a problem with it wearing off, so i don't know that it's helpful for me to say i never really had a problem with sheer cover wearing off. ?? the sheer cover intro kit is great, though, because it came with eye color, lip color, mascara, separate concealer, and moisturizer. (the bare minerals kit i purchased from ulta has a moisturizer in it, but not even sample sizes of mascara, eye color, or lip color; bare minerals doesn't have a separate concealer - just a small brush that applies the mineral makeup more heavily.)
i do like better the sheer cover concealer for coverage, but the bare minerals 'concealer brush' does ok.
as a sidenote, i also tried pur minerals and really liked it, but my husband prefers the totally matte look of bare minerals to the slightly dewy look of pur minerals (the latter has shea butter in it). soooo, pur minerals might be a good compromise for ya because it's still quite natural-looking without being as oily as a liquid foundation. ??