I have the shade frozen yoghurt which is a pretty purple similar to OPI's A Grape Fit! but unlike OPI i found it to just apply really badly streaking on every coat.
My brush was frayed as well so i was disappointed. For £1 i am complaining a lot, aren't i?
Another problem i found with the MUA nail polish is that although it is nice square packaging it doesn't close right as you'll see in the picture (not important but it annoyed me a lot).
MUA nail polish - £1