Alright. An update to my experience.
So I went to the store 4 days after buying them and was greeted by a gentleman that I had never dealt with. Upon telling him i have had 17's for years with out issue on the wireless and then the 18's would drop out after an hour or two of solid usage, he just said... "oh there's something wrong with your home setup or environment."
This I found extremely annoying and I told him I work in IT, so do not test my technical knowledge when it comes to finding wireless channels with out any traffic on them. Besides, my 17's and the 19 work solidly with out issue. The 18's would work solidly for about an hour then consistently drop off and back on until you restarted the system and it would stay solid for an hour or two again. Anyway, he said to try some cables and gave me a whole bunch of cables for free. Annoyed at him i decided not to even use them and go back the next day and deal with the store manager who I had a very pleasant interaction with when I bought the 18's and even when I bought the 19 from him 2 years before.
So I when back the next day, nervous that I had to complain and say I had an issue. Worried that I would have to go through some terrible repair process on speakers I have bought only 5 days before.
Anyway, Peter was busy with someone so I waited for him for almost an hour as I did not want to come back again.
He finally comes over and is very pleasant. I tell him that I had issues with the 18's staying connected but love them when they do stay on. I even explained that I went through and updated the firmware and checked the logs to ensure that everything was correct and in order. He was surprised to hear an end user was so eager as to actually update the firmware themselves. He then says "Alright... do you have the box and packaging? Yes?. Great. Box them up, bring them in and we will give you a new pair. No problem. Let's make sure you're happy"
At this point I am so relieved that I could have hugged him haha. I was so prepared to start arguing an hear about a return process blah blah blah. instead he was very kind, offered a replacement and then we chatted for about 30 minutes about the Beloab 50's and 90's.
I came away so happy with the experience that I cannot wait to deal with the guy again. Champion :)
So it really does depend on who you get. The store manage in this case was a hero. His staff member on the other hand was an ass hat... trying to convince a customer that wireless is completely useless and cables is all they recommend. (yes yes, I know people have problems with wireless but I never ever have) which got me so annoyed at B&O trying to sell immaculate wireless then have this bloke bad mouth it the entire time because he couldn't be arsed taking care of a customer.
All sorted in the end and I will remain happy with B&O :)
The new 18's by the way have had no issue what so ever. :D