I've shot almost two dozen industrial training videos with an EX1 and have recently added an EX3. The stock lenses are the same. If I had to choose between the two, I'd go for the EX3 for the sole reason of having a higher magnification viewfinder. However, I got a great deal on the EX1R and added the Zacuto EVF, which is a great setup.
My DP owns two EX3s and has no problem creating profiles between an EX3 and EX1/R with a DCS Chroma du Monde chart.
Point of clarification, Sony upgraded the EX1 to the EX1R and no longer sells the EX1. The EX1R is supposed to have better IR, ergonomics, and most importantly to me, it has HDMI output in addition to the HD-SDI & Component.
I love these cameras and the Sony XDCAM format. For my uses as an owner/operator, I'll be using and investing in these cameras for at least two to three more years.
For what it's worth, I also like the Sachtler FSB8 fluid head. The EX1/R weighs roughly 6 pounds and I -think- the EX3 weighs about 7 pounds. The FSB4 and FSB6 heads will work for both cameras, but if you plan to add accessories, like a teleprompter, matte box, DoF adapter, then I'd pass on the lightweight heads and go for something more substantial. The FSB8 takes up to a 20 pound load, which was adequate for me.
