I switched from a Fizik Rondine to a Brooks B17 when the rondine broke. I also have also used WTB road and MTB saddles, and some generic taiwanese saddles. Never tried a Rolls.

The brooks is more comfortable on longer rides than any of the others - it breathes, and it dosen't chafe. It is a very wide saddle, I'll certainly go for a narrow or a team pro next time. It was fine for me out of the box (but HARD), it is more comfortable with time but it is a matter of degree - if it starts off bad I wouldn't stick with it.

The rondine is less fussy about adjustment and is a comfortable saddle in general; just not as good beyond 3-4 hours. It is also lighter.