I'm using cartodb's static maps API to create a hi-def printable map. The map is placed on top of a basemap generated in Mapbox studio.
Looks pretty good but I have an issue that prevents me to industrialize the process : When using the anonymous endpoint with a bounding box (http://docs.cartodb.com/cartodb-platform/maps-api.html#bounding-box), the map does not exactly respect the coordinates sent, it's more of an approximation. My intuition is that the renderer needs to stick to a discrete zoom level, and will send a map at this zoom level, with the bounding box center as the center.
So for now, I have to guess what's the bounding box actually set on the cdb map and try and make the Mapbox map use the same bounding box. Not so handy.
A solution could be to use a named map using the view set in the template (http://docs.cartodb.com/cartodb-platform/maps-api.html#named-map), but I really like being able to modify the SQL and the css on the fly.