These truck are quite comparable. both take 2-3s lipo, 4WD, small size and pack lots of power for the size, they are also both fairly annoying to work on and have mostly plastic construction with metal drive lines.

The good points of the Savage XS are:
Lighter weight
Runs very well on 2S
Parts are very cheap
Shell looks much better
So far the chassis seems strong and durable

I think the main points which let the Savage XS down are:
Tyres don't grip well on dirt
The suspension setup is not as well tuned as standard
The ESC and motor in the Savage XS are not providing very good punch in the current setup.
Gears and drive cups seem to wear and break more than they should.
Smaller wheels and tyres with less ground clearance

I would like to try some Proline dirt hawg's and the Ground Assault tyres, they are both 2.2inch from the Nitro MT and will also fit the Savage XS. But first i need to sort out which motor and ESC combo is best.

Savage XS spec:
Spec:
Savage XS SS Kit
Arrma BLX100 ESC
Gool RC 4300KV 3650 Motor
Savox SW0231MG Servo
Flysky GT5
Turnigy Nanotech 5.6AH 2S2P
HPI El Camino SS Body

Team Magic E5 Spec:
Surpass Platinum 3660 3800KV
Hobbywing Max10 SCT
JX Ecoboost CLS6327HV
17mm Hexes
Aluminium Front hubs
Machine Diffs
13T RW Racing pinion gear
Machined Spur 46T
Steel skid plates and chassis protector
Proline Badland MX28
Proline F11 2.8" Wheels 17mm hex
Russian Unbreakable Shell
Centre Diff
Hard Springs
Flysky GT5
Turnigy Heavy Duty 5.0AH 3S
In Soviet Russia Body Breaks Rock
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https://www.youtube.com/watch?v=lRnSMMc3sRQ