I've been with Orcon for nearly a year and a half, mostly on the ADSL2 unlimited plan with Genius phone, the phone bill side of things got me good a couple of times but on the broadband side there were no real issues. 10-11mbps down and just under 1 up.
There's a few things connected to Wifi here(couple of smart phones, laptop, smart TV) and on the hardwired side of things an Xbox and PC. For the most part my ADSL handled it, Netflix ran well, Youtube streamed well, download speeds were consistent with how many devices were in use etc yes there were at times buffering but it was expected.
Anyway, with "UFB deployment dates" still being developed for my area aka years away(Eastbourne, Wellington) it was awesome to see VDSL being offered by Orcon and of course I jumped on it.
Peak speed stats are:
22mpbs down 10 up - Hardwired
17mpbs down 10 up - Wifi
So now that I've been hooked up for a couple of weeks and its passed the DLM period...
1. Just how volatile/sensitive is VDSL? during a speed test with just one device connected to Wifi, it will hit 17mpbs then drop to 8 then back up to 14 then crawl to 17 again and stay, meanwhile upload will stick with 10 and stay there, my hardwired PC is similar except peak is higher and it wont drop below 10mpbs, upload is again steady and glorious.
2. When I had ADSL it handled the many devices sharing the same pool together better. With VDSL the d/l speed has the potential to plummet really far, meanwhile the upload has taken a hit but still performing well! This happens with both wired and wireless, lets just say there's more buffering happening.

Here are my current my router stats and rates


So for me, VDSL is hot and cold while ADSL2+ is consistent.