i only have electric cars at the moment but i am looking at either nitro or petrol power.
i have heard many times that nitro do take a bit of tuning/fiddling with, im not a patient person so if things dont go well i could see myself putting a hammer through it, so im swaying for petrol, costs are daunting though, plus having somewhere to keep it etc.
listen to these guys, they all have made a good point, what works best for you, only you know!
i would get to a meet and talk to owners, see various cars too, you will come away with more of a idea of what you want and a great car to look for, saves wasting cash on something you dont have fun with.