Guitar Vs Amp

Hi
This is my first post here so bear with me.
I have been interested in buying a new guitar for a while now (a Ibanez rg8570z) to be precise.
But recently a friend of mine contacted me asking me to record some of my ideas into a decent demo, since his friend runs a small Indie label/studio and he wants me to send my meterial to him.
So i started thinking maybe its a good idea to get a good amp instead, seeing as all i own is guitar rig3 and a couple of crappy solid-state amps.
The guitar i got now is a Fender made in mexico strat, with a Dimarzio chopper in neck and a Dimarzio super distortion in bridge.
So i woukd like to hear some opinions here, would my strat played through a good marshall or hughes & kettner top sound better then say
a ibanez rg8570z run through guitar rig?


I attached a sound sample of my strat played through guitar rig.
Thanks in advance
Isak.