I agree with the answer above, a $100 budget won't get you even a crappy 144hz monitor, let alone a decent one. If you are willing to spend a bit more however, the MSI G24C is a great monitor at $220 on newegg with a $10 rebate at the moment. It's probably one of the cheapest monitors you will find that don't suck. I personally own the 27 inch version of this monitor and has been awesome so far.