Its rock solid, i'll prob have to check it twice a year. Most experienced cigar smoker would use this system or Cigarmony Beads System which is a bit more expensive. If you are going for some St Dupont it may be worthwhile to buy from them. But be warned that the St dupont refill canister cost a bomb and its one time use only.
Pet, again sorry i didnt realise the shipping is gonna be cheaper. When i was buying there was none locally, there was only the floral foam system at the B&M so i didnt factor shipping at all. I just recently started buying hygrometer locally when prices were marginally higher, saves the hassle of waiting. David of Heartfelt is a good guy, wonderful customer service. Bought nearly every damn thing except hygrometer from him. His hygrometer is allright but not the best.
Boy. alternatively you can get seconds from below, works just as well (my 1st humi was seconds from them) but you still need to get the humidity beads and digital hygrometer to be extra safe.