I agree with many above. 75% is real high. I used to keep my desktops & cabinet at 70%, and I was having inconsistencies in the cigars. Some smoked perfect, but more than I'd care to mention did not. I had bad burns, constant relight's etc. I bought 65% beads and all the problems I mentioned ceased (well, at least 95% problems ceased). So, 65% for me.