Before you go onto the next unit, I have created some CO-LABS with each of these options. Try them out for yourself, check on the time, check on the results, and see what techniques you can figure out to avoid some of the overfitting. Remember that with text, you'll probably get a bit more overfitting than you would have done with images. Not least because you'll almost always have out of vocabulary words in the validation data set. That is words in the validation dataset that weren't present in the training, naturally leading to overfitting. These words can't be classified and, of course, you're going to have these overfitting issues, but see what you can do to avoid them.