Since you have all of the equipment in question, you should listen to it all and decide for yourself. That is always a good idea when dealing with speakers, as some flaws bother some people more than others, and no speaker is perfect.
I will make one observation, and that is that the Martin Logan speakers likely are a better match for each other in sound, so that when a sound pans across the front three speakers, it will likely remain closer to the same when using them instead of the sound panning from a Vandersteen to a Klipsch to a Vandersteen speaker. I would not use those speakers together; I would replace whatever I disliked the most with something that is a better match for the others, if I liked any of them more than the Martin Logan speakers.