Hello, all!

I am hoping for some thread help. I am very new to quilting...in fact, I just finished my first quilt top! Super excited about it!! However, now I need to quilt it, and I'm not sure which thread I should use: cotton or polyester. I've been doing lots of internet and magazine reading, which has made me even more confused. Some places seem to say that cotton is better and more durable, but then I'm finding other sources that say to use polyester since it holds up better to frequent washings.

Any help that you could lend me would be greatly appreciated. I've spent so many hours piecing this quilt (a gift for my brother and his new wife) that I don't want to use the wrong thread to quilt it when I'm so close to done!