If you are interested in PM, then can find a set of BG Radia 520s, and listen them. (Full disclosure: I was BG's patent attorney for many years, until they were bought by Christie Digital.)
The 520s were designed by Igor Levitsky, the designer behind the Oppo PM series as well as other PM systems. The 520s use 50" PM tweeter/mid (similar to the Neo tweeter you see on Parts Express). They create a very nicely sized soundstage and exact imaging, especially in height. A sub is helpful but not strictly necessary in small room. To my older ear which is -6b down at 11k, they sound nicely balanced. They need decent power (100w). Read the Stereophile review.
A lesser, smaller, on-wall alternative is the BG R17s. Google that and you will find a dealer bgradiadesign (to whom I have no affiliation) selling NOS.
The 520s were designed by Igor Levitsky, the designer behind the Oppo PM series as well as other PM systems. The 520s use 50" PM tweeter/mid (similar to the Neo tweeter you see on Parts Express). They create a very nicely sized soundstage and exact imaging, especially in height. A sub is helpful but not strictly necessary in small room. To my older ear which is -6b down at 11k, they sound nicely balanced. They need decent power (100w). Read the Stereophile review.
A lesser, smaller, on-wall alternative is the BG R17s. Google that and you will find a dealer bgradiadesign (to whom I have no affiliation) selling NOS.