A bit late in the day, but as someone who has moved through iView Media, Expression Media and now onto Media Pro I am hoping and praying that Phase One sorts MP out - the sooner the better. Far from the advertised 'warp' speed I find it extremely slow to the point where, were it not for the excellence of the rest of the product, I wouldn't use it. Even EM was faster which must be a record for Microsoft!
Thanks for reporting on your experiences with iView/EM/Media Pro. I have hesitated to move forward with Media Pro because of the bad reports and questionable future support of Phase One.
I am essentially starting from scratch with my DAM so I am still in a wait and see mode. Recently I have been looking at Adobe Lightroom. It may not be an ideal DAM but at least it will have the future support of Adobe.