the R3 is quite imposing, but the R2s are about the smallest and prettiest (in 'normal' as opposed to 'lifestyle' terms) floorstanders I've seen, short of the Totem Arros. Not too tall, and very slim (19cm wide if I remember - they were the only speakers that would fit in a narrow space I was putting them in). Still didn't meet with full OH approval though (though I think it was more the colour than anything), and in the end I changed them. The Mercury F4 is very nice - if you want to go new, you might consider dumping the R1s and getting a Mercury 5.1 setup - I think the drivers are the same as the old Revolutions and it's the finish which is less salubrious.
The Radiuses (Radii?) are pretty, certainly, but I haven't heard them.