I have had one for about 1.5 years, so I gave give my experiences.
Mine is somewhat shy, but not as shy as others have reported. It tends to stay close to the rockwork, but will come out and be seen. However, it is far less likely to come out if there are other people in the room (my wife only gets glimpses every now and then).
It eats everything from frozen seafood to pellets! I have not seen many dwarf angels as fat as mine. Not coincidentally, feeding time is the only time that mine will venture out away from the rocks.
That being said, it took what seemed like forever (probably 2-3 months) before it started taking any prepared foods. So, I think that I got lucky. Also, I only have 2 wrasses in the tank which pay little attention to the angel, which probably helps with the shyness.
All in all, it is a very cool fish. But, if you are looking for something like a flame or coral beauty that will be out constantly, you may want to reconsider the golden.
Here is a bad picture, but getting a shot of it is easier said than done.
