Regular regional? It isn't a regional though. I have friends that have flown on them and they said that it is odd because Embraer did such a great job making this a real airliner and parting from the "regional" brand that the Embraer name has become synonymous with. The cabin is nice and roomy. He said it was very clean (well, it is a new airplane) and it was very powerful.
US Airways Express has reported problems with this aircraft, specifically with the avionics. JetBlue is working with Embraer to ensure that these problems are solved before taking delivery of its new E190's in late 2005.
It's a GREAT aircraft. Takes off like a rocket. There is more leg room in it compared to the other US 737's, but a little less than the airbus. The best part about it is it has VERY comfortable seats and HUGE windows. Just a great, great plane.