As a consumer you still get that sinking feeling of something that doesn't quite work. it's all glitchy.
Has Bluetooth been bettered? I was hoping V4 would iron out wrinks. Wireless applications that are simple to use could be really, really great. That's what I thought the initial promise of Bluetooth was. I have some simple wants, like file exchange, control a media player remotely etc. Send audio output to another device etc.
The last office I worked in, a colleague had a modern Apple laptop, and he had connection issues with the wireless router. It wouldn't connect. Lots of fudging about with it. A fix was falling back to a slower speed to get it to work. There are issues with most hardware and software.
The wireless issues/fixes suggested for my HP are pretty ridiculous, removing drivers, installing in a certain order, barring updates etc. Very technical.
I don't think I've ever owned a machine/OS that hasn't had some problem, including an old Apple.