Still run 2 RF Punch 150's (3rd gen from 89, just before the HD's). Have been running them faithfully since that time to now & still as powerful as new! //content.invisioncic.com/y282845/emoticons/thumbsupwink.gif.129404938effda6ad9cca39e7f4b58a3.gifMy last favorite would be the pre-HD Rockford Fosgate Punch 45/75/150.
All I have ever run is pre-HD RF Punch 45/75/150 & loved them all without any major issues except to change the internal & speaker fuses every so often, but very rarely.