Sketch has much better support for layer and stroke styles than Fireworks did, particularly older versions of Fireworks. For example, you can apply multiple gradient layer styles to both the stroke and the fill of a rectangle in Sketch, with alpha. In Fireworks, you often had to make two or three rectangles to get the appropriate effect of a photorealistic button.
It was the only place i could get some vector work and still be pixel perfect.
Last used photoshop in 2006 and it wasn't even close.
...sadly gimp tries too hard to be a photoshop clone even copying the lame export dialog instead of save as...