I think what he means is that since his front end changes regularly, he does not have a need to match a recommended speaker to his existing components - that he can/would change as is necessary to match well with new speakers. That being said, I think his approach is correct in that it provides him maximum flexibility on finding the best speakers and not limiting his selection to only speakers that mate up well with his front end and other components. I did not read him to state he doesn't think the front end has an influence on the speakers. At his used speaker price range, I don't think changing pre, CD, or even amps will be that big of a stretch.
Lot's of speakers in this price range that are fantastic. More of what you are likely to experience is nuances more so than full tilt differences.
I'd add to the list Wilsons (which I like) and MBL's (which from a size perpective fit your goal). I really think in this price range, attending a show is the way to go. It will afford you the opportunity to hear many high value products in close time/proximity to each other. Running around to different dealers may be a bit much and so broken up in time frame that it makes it hard. At this price range I definately feel a show is the best approach.