I use Schmetz Sharp (not Universal) needles, because that's what JoAnn's carries, and I purchase them when they are on sale or I have a coupon. I use them in my Berninas and my Singer FWs and have not had any problems with them. I use 70/10 or 80/12 needles for piecing, depending on whether I am using my Prescencia 60/3 or Gutterman 50/3 thread. For FMQ, I use 80/12 unless I am using a thicker thread; then I go to a 90/14.
I have some Superior 80/12 needles that were in a goodie bag, but haven't used them yet. I'm not one of those who changes their needle at the beginning of each new project, so I get a lot of use out of my needles.
I also use the 70/10 needles when I am paper-piecing, using 20 stitches to the inch, and I use 60/8 needles when I am machine applique-ing with monofilament thread.