"rock solid" and WiFi dont belong in the same sentence.
WiFi is very environmental between how good your router is, what kind of walls/obstructions you have, what level of interferece you have from other 2.4ghz devices in your room or from neighbors.
Typically the built in wireless chips are not in any way bad but the biggest issue is that they usually just have antennas that sit behind your tower. The better option is to have the antenna above your desk to have as few of obsticles as possible.
The best option is not using wifi at all and instaed using hardwired ethernet cable or even a powelrine network adapter.