Let's speak honestly: Ricardo, IMO (and in the majority of the Portuguese people), was by miles our best keeper from 2001 to 2003. I considered him one of the best in the world! I have a special interests in GK, because I frequently play in that position and I'm an admiror of them, so I always pay a lot of attention to them, evaluating them, seeing them in action. He truly has great qualities! He was always consistent and really great during that time. With him on that form, Baía (that used to be my favourite keeper, and to me the best in the world from 1993 to 1996) didn't have a chance.
But the truth is that since Ricardo went to Sporting, especially in the second half of the season, he doesn't seem like the same player. Somehting very wrong has happened to him mentally, because obviously nobody loses their qualities from one day to another. It's a psychological problem, probably due to the pressure and polemic surrounding Baía being called or not and also Sporting's bad season. So, I think he isn't our best keeper now... He's not reliable... Quim and Moreira are better options. But maybe he can recover his confidence... If he does so, then he's the best, clearly.
All I know is that it's not good having those doubts and concerns over our NT keeper. He must be there for the team to rely on, not to have them constantly worrying about him and possible mistakes.