I have a version 1 RVS4000, and I am wondering whether there would be any resaon to purchase a version 2. Most specifically, is there any throughput difference on the LAN? The only thing I can find on the site is there is a hardware difference. What, specifically, is that difference, and most importantly, is it significant enough to warrant replacement of a working v1? Small business with < 10 computers. Everything is connected via gigabit gear. Thanks.