I haven't ridden a Swift. But I love my Bike Friday Pocket Rocket Pro. I did not ride one before I ordered it, but I did ride a NWT just to get an idea. I used to have a Dahon Matrix (26" wheels) and it was very heavy and the folding mechanism gave me problems.
I took my PRP to Europe and got alot of positive comments about it there. I think they would sell in Europe if they were more available, but since they are built in Oregon, the shipping might make the price too high.