I am currently 19 years old, and I have always liked Mercedes-Benz products since my childhood. Well I am currently working and saving my money with the money I received so that I could buy my own car (my taxes, titles, licenses etc.)
Just give good advice to your God, thanks, and I really appreciate it!
As far as what vehicle you are looking to purchase, that is entirely up to you, so long it fits within your budget! Although being as it will the first vehicle you've owned, I would definitely recommend buying a used one rather than a new one as it will not only cost less, it will allow you not have to worry about "new car" problems that come from manufactures.
The best SUV you can buy is that which you can afford, personally, I bought something that would be less expensive to maintain. I own an automobile store and firmly drive vehicles to handle driving vehicles that see driving, buy a less expensive model on your behalf and give your money back to the bank.