OHM Walsh speakers are mid priced and have some similarities to mbl imaging. To differentiate the two concisely, OHM is perhaps more coherent top to bottom than mbls I have heard as a result of the wide range walsh driver used (German Physiks is the other well known brand that uses these) and are designed to go closer to walls and fit into most peoples rooms easily. mbl requires more distance from walls and created perhaps the deepest 3-d soundstage I have heard during audition.
I've also heard good things about Morrison speakers in regards to 3-d imaging but have not had the pleasure of listening to these.
I also have a small pair of Triangle monitors that are extremely fast and disappear about as well as anything I have heard.
Magico Minis did the trick extremely well also when I heard them (not midpriced though).
Some PSBs I've heard are mid priced and do the trick pretty well also.
I've also heard good things about Morrison speakers in regards to 3-d imaging but have not had the pleasure of listening to these.
I also have a small pair of Triangle monitors that are extremely fast and disappear about as well as anything I have heard.
Magico Minis did the trick extremely well also when I heard them (not midpriced though).
Some PSBs I've heard are mid priced and do the trick pretty well also.