A cheaper one...Chefman electric kettle, with a glass pitcher. https://chefman.com/collections/glass-kettles/products/1-7-liter-easy-fill-electric-kettle
If I feel uncomfortable that it didn't boil long enough, it's suppose to be 7 minutes, I just boil it again. But Dr. Faulkinham says that technically, it should kill the NTM even with a shorter boil, I think because it goes to a higher temp than just boiling.