I'm running the x2c, and have to say its fantastic, car is so easy to drive. Very little to do to it. I change mine but almost always end up back on same setup. Have run it at what must be 15 meetings and not even done diff or shocks.
Think as a first time to off road its the safest bet with the least investment.
In terms off cons against the car..........I can't find any
There are a few things to change to make it bit more universal with other makes but very minimal.