There you go. I will admit that if you can get an Ares for under $300 (like I did) the Ares is a much, much better long term option (not hating on the S&T, but if you have the money and have long term expectations, it is a much smarter move). The S&T is a great budget gun, but try and add up how much you will have to put into the gearbox if you are looking at going through hundreds of thousands of rounds. That price will be more than I payed for my Ares, and I threw a Prometheus Tightbore and madbull bucking and my gun is stock (except for barrel and bucking obviously) and it is seriously outranging my friend's DMR (M14).
So moral of the story: if you can find an Ares for under $300, and you have the money, you will be extremely impressed. Quality is on a whole new level internally and externally (because the gun is more than double the price, which is what you would expect). Once again, not hating on the S&T, just telling you how it is, one of my teammates has the S&T and I have the Ares.
If you have less than that: upgrade the hell out of your S&T. Tavors are a blast and don't get heavy after a long day of play because the weight sits in your shoulder so it feels like it disappears. Either way you will be impressed with your tavor with each option because they are both a great deal (get one used, not retail). Have fun!