...There isn't any info on their page about the output of either that I could find.
Bingo! That is why I get so damn frustrated trying to find bulbs. Even within the same site, some they will list watts (mostly meaningless), others they will list lumens (very useful), and on others they list neither! And on yet others, there are no dimensions listed, so it is impossible to know what would fit in the enclosure. UG!!!
I am probably in the market for some EXTREMELY bright, multi-directional, yellow LED's to put in the city lights for safety...
http://autolumination.com/images/auto_bulbs/194_smt3_a_wm.jpg ? 11mm dia x 38mm length "overall" (is that including the base??), no mention of total lumens, no mention of watts. How can anyone compare anything to anything?
I wouldn't recommend the Super Nova, just based on the fact that it is probably less powerful, overall, and all the light goes forward... I think it would make far more sense to have the widest possible viewing angle in this application. The city light does have a reflector, although it doesn't look all that aggressive.
Yellow makes MUCH more sense.... we already have the bright headlights- having two little not-bright-in-comparison white LED things buried between the bright headlights isn't going to do much for visibility or differentiation.