Input on Humidification System for New Tower

[Firemedic]

Hello, this is my first official positing besides my introduction...My wife and I had just purchased a 3500+ cigar tower for what we hope to be the start of a great hobby. I should arrive here in the next week. I know the topics of humidification systems has probably been beaten like a dead horse, but going to ask one more time for the sake of having it beat into my head. Our tower is the Heritage Collection Olde English Cigar Tower. Now, the place that I purchased it from recommends a Hydra LG, I haven't been reading many positive things on that unit. If my math is correct, the cabinet should be in the ballpark of 18cuft. Any other input on humidifiers, as well as use of crystals etc.? I think a budget of maybe $300 can be in order, but I'll wait to hear pros and cons before I totally decide on that!