This site will give you an indication of prices and styles of 1/5th scale models.
http://rc-car-online.de/shop/en/2-models-cars.html
Myself the bro and our mate went the FG route and couldnt be happier
We all went for 4WD
We only do bashing
Make sure you go for a model that parts are easily got
Stick with well know brands
The one advantage with the FG is that the body style can be pretty easily changed to
Beetle, Baja, Monster Truck, or the standard Marder.
Heres a pic of my FG Baja and the mates Beetle