Funny, While I enjoyed the climb my experience was a bit different. The climb is hard work to say the least. I felt victorious simply riding it up without stopping and being able to do it faster than the year earlier. Before you attempt the climb look at the route on Strava and see if its for you. It's not the steepest climb but enough of it is in the double digit range that you have to feel up for it that day and be a decent climber to begin with. If that's you go for it!
What I didn't like about the ride to Rocca was going through Olot which is no way near as nice as Banyoles.
Another climb which may be harder but is not as steep , just longer that I was scheduled to ride but wound up missing is Mare de Déu del Mont which I hear goes through some interesting terrrain