I have both wireless and wired link room systems. I fully agree with TE that the wireless units can be very problemmatic, particularly if one has a multiplicity of other wi-fi devices that also operate in the 2.4 Gh range. For example, my BL wireless 1 units originally fought for bandwidth not just with my wireless 802.11g LAN devices but also with my Beocom 6000 phone system, which I would have been most loathe to give up. I would recommend the use of the BL wireless units only to someone with good wireless LAN configuration and troubleshooting experience.
FWIIW, I solved the conflict problems by converting as many as possible of my wireless LAN devices (16 at last count!) to wired Ethernet connections, moving the 802.11n wireless devices to their own dedicated 5 Gh range router, and assigning fixed DHCL addresses to the few remaining 802.11g wireless devices such as older laptops, iPhones, and iPod touches. If this is all Greek to anyone, that person would probably not be a good candidate for a BL Wireless 1 user. It is definitely not a Plug-and-Play device unless you have no other wi-fi devices.
I would, however beg to differ with TE on the matter of price. His contention that a wired solution is less expensive is simply untrue in most cases. I researched this issue extensively before deciding to gamble on using the problem-prone BL Wireless 1 for two of my three link room systems. Given the obscenely high cost of ML cable and connectors and the fact that the required link room ML interface costs exactly as much as a BL wireless 1, the bottom line is that a wired solution is almost always going to be more expensive, even if one does his own cable running and installation.
The only instance in which a wired solution would be cost-effective would be if one uses a current-vintage BL3500, which already has an IR receiver and a ML interface built into the unit, as a link system and keeps the cable runs very short. This is in fact the wired solution that I am using in my third link room system. The other two systems use Wireless 1s in receiver mode with pairs of BL4000s.
One last caveat: all of the BL Wireless 1s being shipped by BOA have the original buggy firmware version. Among other problems, the timer function does not, er, function at all. Neither the local B&O technician, the selling dealer, nor the tech support staff at BOA were of any help whatsoever in getting this problem resolved. I finally contacted Struer myself, and they suggested that I have the firmware upgraded to the second rev. That solved the problem very nicely, no thanks to any B&O personnel on this side of the ocean.