Hypertanks are large, cheap, durable, and easy. That said, they aren't doing the job for me that I want them to do.
What's available for toppers these days that don't require a lot of fiddling around and changing out of the coil/wicks/whateverthehelltheyuse and are protected by metal? I was breaking glass right and left before I just dropped a Hypertank on in a hurry and never bothered to switch out. I still have my cartotanks for fancy but I need a workhorse for...well...WORK.
Someone gave me one of these, about a week ago, but I have not used it yet, but a lot of people like them. They use a changeable type coil head also.
Aspire Nautilus Dual Coil Bottom Feed Atomizer Tank with Adjustable Airflow
Also you can get all metal tanks for them as well.
Aspire Nautilus Replacement Metal Tank
KAS