I personally haven't had many issues with e.l.f. the only problems ive ever had with their makeup is from their $1 line. i bought the $1 foundation brush cause i desperately needed one like two weeks ago, and bristle were falling out as soon as i used it. all the bristles finally fell out while washing it today. never using that again. their $1 quad shadows i have a love.hate relationship with. i need to apply them wet to see how that looks but they're too sheer when applied dry. i LOVE their lip glosses and i've even tried their clarifying powder which i do like. their studio line is my all-time favorite, though, i have SO much of their stuff!
I have received one order from them and waiting on a second. my first order i used their 3- day select shipping (spend $5 more to get your product in less than half the time, why not?), and my makeup was at my doorstep in record time. the second time i ordered i took advantage of their free shipping, and I'm kicking myself for not going for getting 3 day shipping at 5 bucks >.<. the site says 3-5 business days to ship, and although i got the shipping email today, i went to track it and it only said my order/shipping info has been received (just checked FedEx site and its finally in transit). it says i should be expecting my order by the 12th, we'll see what happens.