Model wise Minichamps M1A2 SEP is not bad.
But there are certain things that might put you off.
1. The road wheel tyres are not painted black
2. The tracks are not black but silver
3. Pristine looking tank
However there are things that I like about Minichamps tanks:
1. Rotating road wheels.
2. Working suspension
3. Track chains are really made of metal.
4. Of course the heavy feeling of metal.
As far as I know the Tamiya M1A2 masterworks is more expensive well at least here in Jakarta they are sold at US$200.00 compared to US$100.00 for Minichamps' tanks.
If I were you I would not buy any of them in hurry. As long as you have the cash why worry right? Take your time to consider between them.
The hunt is more fun than the kill they say
.
Happy M1A2 hunting!
I would recommend Minichamps Centurion to you too. IMO it's really great. The first tank that Minichamps do that really look like a tank. No more silver tracks.