I'll probably get a lot of hate for this, but i find that RCs are a little bit "overrated". Don't get me wrong. They are helpfull when you suddenly are in a completely different environment, like when you're on vacation. But i'm personally not a big fan about doing a reality check at "random times". Although, i will admit that RCs seem to work out for some people, but i still think it's a little bit overrated.. *I'm ready for the hate!

I find that RCs should be used more often in the lucid dream, because it keeps you're lucid "awareness" high.