ORIGINAL: qaiz

Look Bosley2

Get out and spend a day with both of them, talk to the drivers, and find out the overall costs and expenses, find out from both the tracks if they have regular races. Also, check what you have in stock at the LHS, if they only have Nitro and you wanna go electric, you'll have to order it in.

Calculate the total cost

Nitro :

Car, Kit or RTR
Fuel Filler Bottle
Fuel
Glow Igniter
Glow Plugs
A small bottle of after run oil

Electric :
( Feel free to add, I dont know much about electric )

Car Kit, or RTR
Batteries - LiPo's
Battery Charger
Brushless Setup ( I have absoloutely no clue if it comes with the Kit/RTR or not )
Battery Discharger ( '' )
Battery Charging Bag
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Feel free to add to the list posted above, I only speak for Nitro
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And lastly, make sure with whatever you get, your happy with.