I would definitely get an IPS for the secondary monitor for browsing/videos. The colors will be MUCH better than the VG248QE, but it won't be nearly as good for gaming.
Try to get a 24" to match the size, unless you don't mind having a smaller one. My IPS is a VN248H-P and I would recommend it. Has a very nice thin bezel which is good for multi-monitor setups (especially since the VG248QE has such a big bezel.)