Kalynn I am in total agreement with Susan. Was thinking of posting the same thing but she beat me to it
I'm convinced that sewing machines have (for lack of a better word) personalities. I could do the same tension settings, thread, batting and fabric on my Bernina at home and get a different result on the Bernina at the quilt shop when it comes to the thread definition. Although at times it would be nice to use one thread color on top and a different thread color in the bobbin, if I see those dots it'll make me crazy. My solution has been Superior Monopoly in the bobbin when I have had a lot of thread changes, like on Tim and Beth's wedding quilt. I've never had a problem with it in the bobbin either--I just remember to only fill the bobbin three-quarters of the way full and I use a moderate speed instead of flooring it. I used Monopoly in the top and bottom once for a baby quilt that didn't make the quilt look "shiny" and the quilt has been washed many times. Mostly I use the same thread color in the top as the bottom--using Masterpiece in the bobbin when I can.
Blessings,
Jane