We just bought a mid roof Transit at work. I can stand up in the back and I'm 6'. I haven't noticed that my head was scrapping the ceiling either.
I drove a Promaster and didn't like it. The "clutchless manual" trans. makes a big pause when it shifts, just like you would if driving a manual. The problem is you don't know when it's coming so your always nodding forward due to the momentum. It was really annoying. Also, I think the Transit had a little better side visibility out the windows.
The Promaster is front wheel drive which could be a plus.
We got the Ford diesel. I have to admit it's a smooth running package and it starts great in below 20 degree weather with no block heater. I've had nothing but bad experiences with Fords but I had to admit that of the 3 vans this one was the best.
