I just recently got an AICS(through a trade for scope and blah, blah, blah) and didn`t know what to make of it at first. Yes, it is heavy. Yes, it is uncomfortable if you are not used to it. And Yes, it is *** ugly unless you are into that look.
Having said all of this, I have had a bit of range time with it lately and its growing on me. The weight doesn`t bother me as I am shooting prone. The comfort thing I am still trying to get used to, all of my previous rifles had either TRG or McMillan stocks. I find I have to be exactly in the same position for each shot to stay comfortable, which is good for the consistency of my shooting but could be an issue in the field. I also can`t line up a shot unless my index finger is inside the trigger gaurd, this I don`t like. And as for the looks I still think its ugly as **** but hey, these are just my opinions, all that matters is, if it work for you.
Ivo
PS. I would highly recommend getting out and trying one or at least handling one before you make the big purchase.