I have been buying Champion t-shirts for several years and overall I have been satisfied, although sometimes you can be disappointed with the quality when purchasing online, or with the fit, etc.
Generally, Champion t-shirts are durable and withstand multiple washes without any issues. I wear them to work about 90% of the time, where they are usually worn for a day and then put in the washing machine.
I have over 30 different Champion t-shirts and I have been satisfied.