Congrats on the new machine. I used that machine when working in an alterations shop. Organ is just another brand of needle. I prefer Schmetz needles. As for piecing a quilt, size 10 or 12 is good to use. For quilting I would suggest a 14 or 16 needle size. Using the titanium needle is strickly preference. I have used both and really have not be able to distinguish much difference. Have fun with the new machine!