Too many people underestimate Raymond. He is by far one of the most versatile actors (From Taste of Love, The four, Twins of Brothers, to Mysteries of Love) and therefore that makes him one of the best. The fact that he's actually talented in singing (being actor-converted) shows that he can really do anything in showbiz.
He's one of the best male singers TVB has to offer and is amazing in live. He doesn't lip sync and due to his talents at live events he's capable of having his first concert, Let's Get Wet after just 1 album worth of songs.
The only drawback to his image is probably that he doesn't have great chemistry with his female partners in a lot of series. I don't necessarily think this is his fault as he is quite charismatic and comfortable around females (This is evident with him holding hands to lead his female guests in concerts and his "actions" at his most recent concert, Come 2 Me Beauty 7-27-10). He did look good with Linda and Li Quan in Twins of Brother. I don't think he works that well with Tavia even after multiple attempts.