I don’t have one, but I was in the same dilemma when I had my IM40. The SR 60 looked enticing. I say go for it if you are thinking about it and have the room for it. I think IM is having 15% off right now too.
Well, I have an SR 80 good tank but knowing what I know now I would never go AIO for anything over 50 gallons. The simplicity is nice but I don't think the filtration is adequate.