There were some teething issues with the airplane that since have been worked out, mainly avionics/electrical (there were some anti-ice and fmc compatibility issues). We've discovered, however, that with 72 pax it's really not a good airplane for much more than 3 hrs block time. Beyond a 1,000-1,100 nm stage length you're going to start taking some serious payload penalties west bound. In this regard it's not much better than its younger siblings (e145). Where Boeing7E7 came up with those number and that statement is absolutely beyond me but I can assure you, they're not accurate. It's a great airplane cost wise and operationally for missions between about 550nm and 900nms. At least that's been our experience and have heard likewise from Republic/Chatauqua.