I also use thread I purchase from Connecting Threads! The spools are generous and if you buy in bulk, it is even better! I tend to buy mostly white and black, but have recently purchased several colors...I am not at all happy with the threads I have purchased at local stores...the quality seems to have gone down...I have found knots, weak spots, dirt marks on the thread that you can't see when you purchase, and lots of fraying...

I would not want my hard work to go down the drain for a few extra pennies the better threads cost!