What do poeple think of the Teamsters Union?

I was laid off in December,and I have been approved,cl A ,CDL training.I have wanted to drive big trucks for years,but never had the time for school,or the $5000.00.I have narrowed my search down to three schools.One of the schools being a Teamsters school.Aside from the cheapest cost of the three,can anyone inform me,how being a Teamster driver,would benefit me,or obstruct my career path?I have heard good things and some bad things about trucking unions.I am hoping to get input from some Teamsters,and non-union truckers,so please identify,your affiliation,when responding.Thank you so much.