It all depends on how much you want to spend. Sometimes expensive ones are bad and cheap ones good. AND vice versa. I got one and cheaphumidors.com and it has worked great. Others got some from there and threw them away. Mine has 150 capacity. It stabilized quickly and has held perfectly. Buy bigger than you think you will
ever need. Once you start down the slippery slope there's no turning back.;-) You will want to age some and keep some for a special occassion, buy more and more and be gifted some and pretty soon you are out of room(again).:'( Then you have to buy another humi.
Also, some members may have old ones they want to sell.