man... Marshall amps are all about their british grunt... as in tube amp voice. MG series are solid state... and you are looking at a higher watt MG series... are you sure you want that?
If you are adamant about MG series or your budget doesn't allow or your environment you are going to play doesn't allow you getting a tube amp, then maybe you can try the modded Marshall microstack from Beez. Pretty good sounding for solid states. But if you are looking for more versatility then you should try Roland microcube/cube 15/cube 30. Great solid states amps