I have Polk RTi A5 speakers and to me they sound great on my Marantz 1060 (vintage integrated). But I don't have much to compare them to other than my old Kenwood three ways that came with a rack system back in 89. They sound cleaner, tighter, and brighter.
Anyone have any feedback on these or similar modern Polk? They don't seem to get much attention on forums even though they are very popular in general.