I have bought the 50 thread collection. I love the embroidery thread, and the fact it has matching bobbins. I did notice some of the colors were the same but had different names on them. I did contact Smart Needle, they responded needing order nimber. I have not heard from them for 6 months. I would buy the thread again. I have a Viking Designer SE.
I have used polyester thread and prewound bobbins from ThreadArt for many years for my embroidery (I own every color available from them). I also recently purchased the complete cotton thread set for general sewing and am very pleased with the quality and price!
I personally use Thread art when purchasing my thread. Last week I got 120 spools of embroidery polyester thread 1000m, a rack (holds 120 spools) 1 pack tear away stabilizer, 1 pack cut away stabilizer (200 in each pack) for $149. Free shipping.. I have used them before. Love their items and customer service is great.