How long would you say it takes to feel the effects after switching? I did this a couple of years ago and as far as I remember the only real effect was my energy levels were more stable.

I gave it maybe 2-3 months and decided it's not worth it.

Tempted to give it another shot!

I think some of the positive effects are very quick (better sleep) whereas others take longer to materialise. My wife commented after maybe 2-3 years that I had become much more organised. I think that happened because I came off caffeine and then adapted over time to having a different brain chemistry, so I learned techniques to organise myself that I wouldn't have stuck to had I carried on consuming caffeine.