We've started up with a couple of Tamiya's (417v5 and 418), and although there have been much talk about X-ray and durability, we have only broken c-hubs.
And the cars have take a fair amount of beeting.
Other newbies at our club are running X-ray's T4 14 and 15, and they are also breaking parts. There are one guy who have broken his lower deck twice on his T4'15.
I'm not the person to say that X-ray is not as durable as its reputation, just that a Tamiya seems to do an OK job of taking some beating.