I use the boards for the ceiling lights that DO NOT HAVE the regulator chip built-in to the board. The regulator chips are known to produce RFI which may interfere with (blank out) your HDTV reception and other VHF RADIO items like the WX RADIO etc...
$4.99 a board and 10 for $40 buck a few years back from EBAY CHINA...
The ROUND ONE with LEDs all around the assy seems to be popular for low cost. Don't know if they regulator chips in them or not. The regular chips allows the leds to be operated from long 9V to 15VDC or so DC POWER source...
All the one I got say 12-14VDC and since they were very cost I got several spares. Have not replaced one yet since 2009...
DO NOT BUY ALL AT ONCE. JUST Buy ONE and see if you like it before spending $150-$200 for replacements...
Roy Ken