I have the JBL Studio 230's. I've EQ'd them to be "flat" on both a cheap Sony Receiver and a Yamaha Aventage A4A. In both cases I did not find them to be bright at all. They are very detailed and when placed well and EQ'd I have a tough time finding any problems with them. They are my main L/R speakers and will be until something that blows my socks off comes along.The Studio 230 are pretty bright sounding and people where complaining that they get a little hard on the ears when they listen louder.
I would prefer the Stage A130 or even the JBL Arena series