You need to show us the rest then, Trond! They are spectacular!
Your Rhododendron albiflorum looks quite different from the way we see them in the mountains here:
Calgary, Alberta, Canada - Zone 3
-30 C to +30 C (rarely!); elevation ~1130m; annual precipitation ~40 cm
Yes, they're very different from your plants. Could be the climate or maybe the provenience. My sole plant is a bit suppressed too by its neighbors.
Rogaland, Norway - with cool, often rainy summers (29C max) and mild, often rainy winters (180 cm/year)!