There are many sempervivums available that have spectacular color, potential to grow to large sizes, pleasing aesthetics of leaf form/shape and novelty of having bumps, tubes or crests.
What I like is having a smattering of cobweb/tufted types in my Semp collection.
S. 'Majestic'
S. 'Vanille'
S. 'Ali'
S. 'Lively Bug'
S. 'Wendy'
