I hate to disapoint you but if you plan on ready to run dont buy a tank with metal tracks as there are major mods to be done to make it reliable as the rear idlers dont like metal tracks on the tiger they have a habit of breaking of go with the s&s version and buy the metal sprockets they are easy to replace and the plastic tracks make the tank more reliable as they dont apply the strain to the rear idlers as for supplier go with rc comand he will give you the service you need being new at the tank crazzz and you wont have to pay the higher shipping when buying out of canada and the tariffs custom applies to your purchase for england and canada mato is the place to buy for some parts and rc comand is better for other parts so it is a tossup as to where to buy but you are in the US so buy from a local to save money