Tomtom navigator 6. Handymap AI Gold both good. First one is very responsive and quite accurate on my PPC, functionality also out performs Handymap. AI Gold is a bit laggy, probably because of the slow CPU but I think it should not have this problem on Kaiser. And interface's better for AI gold. And they have free map update every 6 month too, which tomtom6 you need to buy new updated maps
BTW it's TyTN II not 11