I have replaced about 400 bulbs for friends and every one gives more light the the originals.
I absolutely use only 5050 elements in different combination.
921s I use minimum 13-5050. 1141 are replaced with 23-5050.
Barbara and Laurent, Hartland Big Country 3500RL. 39 ft long and 15500 GVW.
2005 Ford F250 SD, XL F250 4x4, Long Box, 6.0L Diesel, 6 Speed Stick, Hypertech Max Energy for Fuel mileage of 21 MPusG empty, 12.6 MPusG pulling the BC. ScangaugeII for display..