Best BBT?

I was curious as to what BBT you all use? I bought one from walmart about 2 years ago but the battery is dieing in it instead of replacing the batterie i figured id try a little better one this time. I'm not wanting anything to pricey but something that is good :) thanks for the help in advance!

    BBT??? I'm not familiar with the acronym.
    About Jackie Jones
    Born: Waynesburg, Pennsylvania
    Current: Maidsville, West Virginia
    Birth: June 19
    On since: Apr 8, 2014
    My Name is Jackie I'm 29 years old && Married to my for going on 8 years. I'm the mother of 2 beautiful children Aiden who will be turning 5 in June && Addison who will be turning 2 in may we are currently trying for our last and final baby #3 :)