I'm pretty fond of their bipolar speakers for HT. The already cheap
AVBP2 sealed bipolar surrounds have a reasonably flat response uncharacteristic of Fluance's other lower cost speakers.
This particular model has a high 4kHz crossover point, so any weird phase matching issues aren't obviously discernable. This speaker seems to leverage the increased upper range of its 4-inch driver, so cone breakup is not obvious. Of course, these play behind my head, so I may not be able to listen as critically as I would with mains or center.