[MetalMan]

To each their own I suppose, although I've been using a cheap ~$10 5V UBEC in my React for well over a year now with 2s Lipo. As Brian noted the current draw is extremely low, and thus the chance of failure also should be.

The only downside (IMO) of the UBEC/BEC method with 2s Lipo is that you need to be able to disconnect the battery. I have a second switch that does this for me, although there have been times where that switch was accidentally left on. This has killed one 2s, and nearly another.