We used to have the non PI as company cars. The main complaints were always that the cockpit was oddly shaped, cramped and really bad rear visibility. Rear passengers would often complain of getting car sick as the windows are very small and tall.
I can't recall anyone that actually liked them.
On the other hand we never had any major issues with them up to about 150K miles when we'd replace them. Like many have said, it's reported that the PTU unit and water pumps are issues in in the 3.5/3.7(same motor layout) , we just never saw that.