I ordered the Flowtoys Flowchucks 4-capsule 2.0. While they are a bit pricey they are an incredible tool. With adjustable cord length, incredibly bright LEDs with a simple interface and many colour combinations to choose from make them great for pro performers and beginners alike. They are close to indestructible when used sensibly. With the lifetime warranty and the peace of mind that comes with it, flowtoys flowchuks are excellent. I had an issue with my flowchuks and flowtoys got in contact with me and they have sorted me out.