Well... this was my thread from almost two years ago. The advice given to me is still very solid today. I still have my drymistats but I only use them in my travel humidor.
In the two years since I broached the topic I have moved up to a 600 count waxingmoon humidor and I use about 2 pounds of Heartfelt beads in it. The beads are fool proof and I only use so much because my humidor has dedicated space for them and it means less refilling of the beads. My old smaller humidor has now become a flavored humidor for my wife and I also keep a 20 count at work. I use the Heartfelt beads in all of my humidors except my plastic travel humidor.
When you're ready to move up in humidor size (sooner than you would think) I highly suggest waxingmoon... here's the link to my thread about Ed and his build of my humidor:
http://www.cigarasylum.com/vb/showthread.php?t=47993
Back to your question though... get the beads... you won't regret it!
Randy