The HPI Baja Blitz Short Couse Truck is .... INSANE FUN!
First Impression - as fast as a Ferrari! Makes you scared you'll crash it,...
so quick...
Advice - go easy for the first few minutes!
When you de-throttle (to off), a nice amount of braking kicks in...
The HSP Brontasaurus - it's actually quite fun for $134... Suspension is very good. It was so cheap because it's only the NiCa Version, not the LiPo (Battery) version. The Hobby shop boys said it was also the slower brushed motor, not brushless.
Verdict - The 'HPI' is for me, and the 'HSP' is for visitors and kids!

(The HPI Blitz is also waterproof these days!)