for a full metal yo-yo, center track bearings are one of the best, but konkave are also good.
You add a ball bearing to the axle.
The best yomega yoyo is the maverick because the maverick sleeps the longest and that was the only yoyo that I could win a yoyo completion with.
A yoyo is typically made of two plastic or metal halves that are connected by a bearing or axle in the center. The material used for the body can vary, with plastic, metal, wood, and other materials being common choices for yoyo construction. The string used with the yoyo is usually made of polyester or cotton.
Butterfly yoyo.
Andre Boulay
i dont know any but i think your best bet is on yoyoplay.com or yoyo expert
Freehand MG Anodized
prolly the catch 22
fire thunder
The Eiffel Tower, which is also the hardest.
If you are a beginniner, it can be helpful to learn on an automatic return yoyo. With an automatic return yoyo, tricks are a lot easier to perform. An example of an automatic return yoyo is the Yomega Power Brain Return Yo-Yo. http://www.yoyoplay.com/yompowbrain.html
to make your yoyo unresponsive, you can get this accessory called a shim. it will make your yoyo unresponsive. also, once you get them, they arent permanent, so you can change your yoyo whenever you want to responsive or unresponsive. plus.. there only like 2 bucks for a whole pack of them... and you only need one at a time!