I'm a Glide fan, too. It's strong, little or no lint, fine and comes in a wondrous array of colors. I bought it online, originally for my longarm but it works great on my Janome 8900, too. I have a lot of Gutterman thread from before I discovered Glide and wanted to use it up, but am using it less and less because I like Glide so well.

The main difference among threads is fiber content (rayon -- great sheen, but weak, used mostly for decorative stitching), cotton (people used to think it wouldn't tear fabric if there was stress on the seam, but that's not a realistic problem from my point of view as someone who taught classes about fibers, and it does create lint, is often thicker than poly), and polyester (strong, thin with little lint). There are also cotton/poly blends that have the strength of a polyester core and appeal of a cotton cover. I think they just add lint and thickness. Over the years I've switched from cottton to Glide polyester. You could get spools of other good brands and see which you and your machine like.

My quilting machine seems to prefer King Tut and I am going to try Aurifil, and it is not fond of Connecting Threads but it is probably me and playing with the tension.

Good luck!!!!!

You asked specifically about thread for piecing. I prefer Bottom Line, which is a 60 wt (on the thinner side) polyester. I like it because, like Dunster, I do a lot of precision piecing (miniatures and small pieces) and I can easily find it in my area. I have nothing against Glide, it's just harder for me to procure. If you want something that is less linty, look for poly thread, cotton tends to be on the linty side.

Thread for quilting is a whole 'nother ball of wax. 😉

I use cotton, but I buy in lots at house sales or on ebay...to me, if it isn't old and doesn't break, it's fine. I save my more expensive thread for quilting.

I started using Glide thread last year. It is available in smaller cones and works in my embroidery machine also.

I don't like using Aurifil thread. There I said it. It leaves too much lint.

Great tips. Thanks!
 

A big thank you to all of you.

I have some of the threads you mentioned but got them for longarm quilting just did not think about using them for piecing thanks