Piecing Thread
For piecing patchwork you need to use 100% cotton thread, for dressmaking you need polyester thread.
I love and use Mettler thread for piecing and Gutermann polyester thread for pretty much anything else.
For quilting, check out the range of Gutermann quilting threads, particularly the stunning variegated threads.
NB Do NOT use hand quilting threads in your sewing machine; it has a wax on the threads and will cause major problems to your machine.