Going to go ahead and say avoid the sly's. Yes they look pretty cool, however I hear people complain about them fogging a hell of a lot.
I personally favour the VForce Grillz to any other mask. They're light, never seem to fog, are very breathable and have great peripheral.
I4 is best mask by far have played in freezing cold and scorching heat and not a drop of fog not even a hint would recommend this mask to any1 only downside you might find as a new player is it leaves your neck and forehead exposed.
i say go to your local store to try on some different masks see which you feel more comfortable in , everyone's comfortable 'level' aren't the same.....
" 1st try it then feel it .... & buy it ...."