Speakers with good timing

I have come to the realization that I am very timing sensitive, and noting is this more obvious or apparent than in the bass region.
My current speakers are some very good condition Yamaha NS1000M's but I always fear that they will give up the ghost at some stage. By way of information they combine super fast treble and mid, with a fast tight bass due to their sealed enclosure (infinite baffle). I am always drawn to electrostatics, and heard some very good linkwitz riley copies - both have that lack of overhang - or a second bass sound following the first coming from a bass port.
I happened to have an ll too brief a listen to some vivid audio standmounts that had ports - although I was told that the ports are to relieve back pressure from the drivers as opposed to being there to create bass.
Out of interest does anybody here know of other speakers that time very well