both cars are of a different class. if you're using the car to ferry passengers/family car, the Myvi would be the car of choice hands down. if you have 1 passenger most of the time, and you enjoy driving, then get the neo.
it really boils down to what you want and what you need. i am very sure for the Neo, the fuel consumption would be higher as your driving style would be more aggressive, given that the Neo can power through corners. as for the resale value, i have no idea, but if it breaks down as often as other Proton cars then you can be sure the condition of the car to deteriorate very fast..which would affect the resale value.