Best look at a lot of reviews but personally I don't like the look of it and I have not heard good things about ARES either. If you do upgrade it though I guess it wouldn't matter so much. Still, I'd rather just get a G&G rifle and upgrade that.
The Amoebas are pretty weird and most people lover or hate then or quite often lova and hate them at the same time. The price looks reasonable but as they are ares I would avoid them if you aren't capable of doing some upgrades if it does have reliability issues.