My simple answer would be "No"!
If you want a "rock solid" network then, I would suggest it needs to be "wired".
The MIMO type of wireless hardware should be the most reliable, but bear in mind that any "high speed" wireless networking (i.e. speeds in excess of the 54Mbps 802.11g standard) is proprietary and requires compatible hardware from the same stable. The new 802.11n WiFi protocol, supposedly supporting 540Mbps, will eventually result in high speed hardware being compatible again.