There are a few pages of HPI Savage info on the site now.
The truck is truly awesome. I've had a few problems which you can read about on these pages. If your thinking of getting one of these trucks be prepared for lots of taking apart, rebuilding and general maintenance, they are toys but they are also 'small cars' with crazy performance and anything of that ilk is going to need lots of TLC.
I've had problems with both my differentials collapsing and I've had some carburetor problems. All were handled really well by ModelSportUK (under warranty). Whilst its still under warranty it makes sense to go with that first as this can become an expensive past time.
RTR - Ready to Run ... personally I think this is a bit of a misleading acronym. What it actually means is that the truck is pre-built and comes with all the radio gear (receiver and servos) installed. You will soon need to do some repairs or upgrading and so on.
You can read more on these pages:
Radio Gear and Steering Bearings
Guide to Spur Gear/Clutch Bell Ratios
HPI also run a great forum that you can find here.
So far I have made quite a few upgrades to the standard model (Savage 3.5) which in my opinion are key to getting the most fun out of this truck. You'll also find that as you use this truck things will break and at those times its worth looking at ways to improve that part of the truck The upgrades I've added to this struck so far include:
