Hi, My name is Eric Moyers. I am a Network Support Engineer in the Cisco Small Business Support Center. Thank you for using the Cisco Community Post Forums.
Both are good units.
In regards to the AP541N which is supported by the Small Business Support Center, it is PoE but it is recommended that it be powered by Poe Switch not an injector. Also if you are mounting to a wall the Aironet would be more designed for that. The AP541N is more of a box for a shelf and the Aironet is better suited for a wall or ceiling mount.
I believe both units are good units, but if mounting on a wall I would use the Aironet.
Thanks
Eric Moyers
Cisco Network Support Engineer
CCNA, CCNA-Wireless
1-866-606-1866