You can manage humidity easily enough in tanks or vivariums - no problem .
If you have a few I'd use vivs or tanks as their display value is priceless and grossly underestimated in my view - I have 21 snakes and 24 viv setups ..
If you want to have 30 plus and go into breeding than I guess re rubs are the better option - simply to save space like the person above correctly said .