Not really that good. If you look on the bottom of Better Bottles, you'll find the recycle code is a 1, meaning that it is a higher quality plastic that doesn't allow a lot of oxygen permeation. Your water bottle is likely a 6 or 7 so it is an inferior plastic. You can use it, and some do without problems, but most serious brewers shy away from them.
If you can't fix it with a hammer, you've got an electrical problem.