I had a Slash and now a SC10. Slash is a very durable truck, no one can say anything about that. But the chassis sits pretty high and you will flip over a lot during turns if you don't tune the shocks.

In terms of overall quality, drive and handling, I would recommend the SC10. The gear box is a lot more smoother than the Slash. The overall handling and feel is very good. Feels and drives like a 2WD buggy. Very nice.

I don't have a Blitz, by looking at the truck, it is very similar to the SC10. It's made by HPI, so I assume it's got durability.