I am also still using Aperture. Does everything I need, nice workflow. Too bad Apple has gone tablet mad. You'd think an outfit that big and profitable could afford to keep more product lines going. I bought a stand-alone LR5, but am not keen. Nothing wrong with it, I just prefer using Aperture.
I keep checking out After Shop Pro by Corel, which is what they called Bibble Pro after buying them out. It doesn't appear as though they're making any updates to it, but I haven't downloaded it lately to make certain of that.
I do have Pixelmator but don't use it much. I think it can do a lot of what Photoshop does, not all. When I first looked at it, it seemed enough for me but I haven't really exercised it much, I do 99% of my work in Aperture.