The more expensive one has an IPS panel, which will generally produce more vibrant and accurate colors as well as better viewing angles. If that's important to you, buy it, if not, you can save 50$. I have a dell u2713hm IPS monitor and compared to a TN monitor, the difference is huge. It makes the TN monitor look grey and washed out without being overly saturated.
Hope this helps! 😀