Im looking for an amp to play blues rock ( Like GnR songs mainly )
Slash is obviously the guitarist I am influenced by, anyway,

Roland Cube 15x vs Peavey Vypyr 15.

Please say why too
Save up for more. What type of guitar are you playing? Is this a play at your house only? I'd go with the Roland Cube out of those too but then again first thing I said was save up for something better
you could probably get a small tube amp for what you would spend on those...especially if you're not gigging, don't need a ton of effects, and you could buy used.