Yep, I have the 20, the 14, and the 45. Not sure about the 25mm focal length? It might suit me better than the 20. Might get the 25 and try it with the idea of selling the 20 if I like that focal length better. I love the 45 but it's too long for most things for me. I use it for portraits mostly. I think the 30 might fill a hole in the prime focal length range for me. I had the Sigma 19 at one time and liked it. I hear the 30 is a bit better.