MeterPlugs 'Perception AB' A/B plugin for mixing and mastering

MeterPlugs just dropped a deal on their 'Perception AB' A/B plugin, useful for mixing and mastering. It's currently priced at $104, and the offer runs until October 9th. You can check it out here: www.pluginboutique.com/product/3-studio-tools/79-metering/7561-perception-ab?a_aid=620857295e7f3 . If you're looking for precise A/B comparisons in your workflow, this might be worth a look.