I'm sure glad that back in my early days of researching for LED REPLACEMENT lights I only had a couple of sources...
They were only available from EBAY CHINA in leds placed on board panels with adapter cords for the various automotive type DC bulbs sockets...
I ended up with this 36-1210 SMD LED Light board, Warm White DC12V which cost $4.99 or ten each for $45 from ebay china...
The WARM WHITE was the best for me to use in the ceiling lamp fixtures... Some folks would add special lens to spread out the light better... Also the boards without the built-in REGULATOR CHIPS on the boards were best to purchase so that the generator RFI signals would not interfere with your HDTV TV signals and other radio electronics like the WX Radios, Ham Radios, etc...
COOL WHITE LEDs are probably best to use for reading.
Perhaps you can get some demos at places like OFFICE DEPOT before buying a bunch of your new LED units...
Sometimes buying just ONE saves in the end...
Roy Ken
My Posts are IMHO based on my experiences - Words in CAPS does not mean I am shouting
Roy - Carolyn
RETIRED DOAF/DON/DOD/CONTR RADIO TECH (42yrs)
K9PHT (Since 1957) 146.52M
2010 F150, 5.4,3:73 Gears,SCab
2008 Starcraft 14RT EU2000i GEN
2005 Flagstaff 8528RESS