Before you go out and purchase a 4x4 vehicle, there is some research to be done. You want to get the best out of the vehicle you drive with every day, so just picking one off the top of your head is not sufficient. You need to know what you want and compare that with what you are buying.
A 4x4 can be described a vehicle where all 4 wheels are driven by the engine. 2WD and FWD is based on how many of the vehicle's wheels are turned during transmission: 2WD being that only the two rear tyres are being powered, and FWD being that the two front wheels are being powered by the engine.
4x4 vehicles are bought because of their ability to handle rough and demanding terrain efficiently. Torque is fed through from the engine to all four tyres, and therefore the vehicle has more power and control and can manage the terrain better. Now, if you are a real city slicker, driving a 4-by-4 vehicle will benefit you in no way. Unless you have a big family and you enjoy camping or 4-wheel driving over weekends. If you live on a farm or areas with rough terrains, I see no point in buying a normal light weight car, as driving the roads, combined with the dirt and dust fed through to the vehicle's different parts, will only damage it and decrease its longevity.
Before purchasing a 4-by-4, make sure of all the facts and see if they suit you lifestyle. Usually, a FWD vehicle is more expensive than a 2WD or a normal light weight city car. You should make sure that your budget allows the purchase of a higher priced vehicle. Also keep in mind that the purpose or usage of a vehicle like this will increase you vehicle insurance policy premium considerably, given that they are used to climb small hills and pull heavy objects. Some of these vehicles can also be used as Rally cars, which confirms their safety and stability features.
You do not want to pay money for something that you are not going to use to its full potential, so have a look at your area and its requirements. Save the money and buy something cheaper: you will still get the same functions and performance. For instance, you wouldn't buy a light weight car if you live on a farm.
Purchasing a car is a serious transaction and certain things need to be taken into consideration, like its fuel consumptions. Buying a fast, powerful car might make you look wealthy and cool, but can you afford its upkeep and fuel usage? Compare different cars against each other by looking at its maintenance costs, instalments, insurance premium, custom add-ons, special features, abilities and fuel consumption. Choose the right vehicle according to your needs and requirements and the functions and abilities you will utilize. Have a look at the area you live in as well and make sure to choose a car that you will use to its full capabilities in order to get the most from you purchase, but most importantly, enjoy driving it!