Josh, listen to what Gary says... wise words!! You may find it offensive but it is the truth. Put a 27t stock in and learn how to drive and how to set the car up. Even a 19t motor is too fast for a beginner like yourself, in my opinion. If you keep throwing money at it, you will just go fast in a straight(ish) line and break a lot of parts, and end up with no money (or your parents will just say no to giving you more money!). Remember, slow is fast!
Listen to Leg-end too. Simply because he is THE Legend!
Back on topic (lol), I found my old Losi 2wd broke no more than my B4... but to be honest with the speed of the cars nowadays if you crash something is likely to break. At the time I had my Losi bits were more expensive than B4 parts, which I guess is a factor worth thinking about.
Liam...