I tried the 5000K VLEDs 921s as my reverse bulbs. Although they’re much better than stock incandescents, I replaced them with LASFIT 921/912. Brighter and a better spread. Plus the VLEDS cost $80/pair while the Lasfits were $30/pair.
921 912 White LED Bulbs CANBUS Error Free For Reverse Back Up Light - Lasfit Auto Lighting
BTW, if anyone wants to buy the VLEDS from me I’ll sell them for $35 per the pair. Shipped. PM me if interested.
Edit: These are the VLED bulbs.
HIGH OUTPUT WHITE 6 LED 921 - 921 - Reverse Back-Up - Shop By Application