For Esky Belt CPV2 parts? Well, my personal experiences are with the following stores that I've listed in order as my favorites:

USHobbySupply - superb customer service and EVERY order I've made was shipped within 24 hrs and received in less than 4 days.
Jag Hobbies(USsupplier) - Best list of esky parts for the belt v2, but they take their time getting it shipped it seems.
Toy RC(HonkKong) - cheapest of them all by far (like 30-50% cheaper on just about any part)buttakes10 days.

I have by chance also found out that the head on the Belt CPV2 & the King III are identicle....so if a store has noinventorylistedfor a specific part for the V2, they mayhave some listed under King 3.

I would order 1 of every part in the head&tail.I would also get two (2)5.5 mm hex socket wrench for tightening the main blade clamps to the feathering shaft(which is a very common repair).Lastly for tools, you need ball link pliers, pitch gage, red threadlock and a medium CAglue.Use CA for all screws into plastic and red threadlock for all screws into aluminum.....that should be one of the 1st things you do with the heli.