A 16 qt would work well, tubs are definitely easier to control overall but I love having tanks. If you do consider a tank - do yourself a hugeeeeee favor and make sure it is a short tank. I have used 6 different tanks between my two snakes in the last 2 years and right now I am having a 12 inch high tank made. This tank will be much easier to control compared to my 45 gallon now which is difficult to heat and keep humidity in at 20 inches tall.