I can be ultra-clear about this, there are no throttles applied to any traffic on our capped, or uncapped plans - the ONLY feature difference (ignoring any bundle differences as the 200Gb plan is a couple of years or so old), is the included data volume.
Does Orcon have a separate bandwidth pool for uncapped vs capped plans?
I believe it does. According this this any ways: http://www.orcon.net.nz/support/gfaq_page/i_have_an_unlimited_data_plan_what_does_this_mean_for_the_speed_of_my_conne
Have a read from the 3rd paragraph onwards
We have separate ip pools yes (necessary from a provisioning perspective) - but those ip pools have identical bandwidth policies. I've asked for that wording to be reviewed as it may not best reflect the current position.
Bear in mind since that was written, Unlimited has been and continues to be our most popular plan both by new sales and plan change, its not in our interest to artificially limit it in any way other than by overall capacity (as with any ISP there are finite limits to anything....).