For getting medicated beyond belief, the HA is one of the best. Why? Because it's so easy and requires so few steps. I can plop a few scoops of weed in (yeah I grind in my HA... CRAZY !) and rip and rip on it until the bowl is cached, and I'm left with really well extracted, nice and even, and dark brown AVB with very minimal trichs left on it (sometimes I can see little micro trichs on the AVB and that's already looking through a scope). And then I'll absolutely be medicated beyond belief.
To do the same in the E-Nano would take much more effort and time. After each rip on my Nano I like to stir, and I also like to pack small amounts in my Nano at once, I feel it shines in that capacity. Though this means several steps each time I hit it (pack gong, place nano, hit, remove nano, stir, place nano, hit, remove nano unpack, repack). Not to say the Nano isn't awesome at what it does (analog convection vape cloud maker), and also not to say that the process isn't enjoyable (sometimes I do enjoy it but lately because of hand pain have not).
Is the taste from HA as good as Nano? Well to break it down, the HA vapes a bowl completely differently than the Nano. Because the HA has airflow consisting of many small jets, it will much more gradually vape a bowl than the Nano. So this means the beginning hits will have great flavor and the last hits will not be so great (also depending on your vaping temp ofc). With the Nano the bowls get vaped less gradually (at least the way I use it) so it means more, better flavor per hit. So I like to use both but right now my HA is my daily driver... and yeah the HA gets slept on as it can extract so well and evenly and it requires minimal effort with no stir or grind necessary. A couple weeks ago I was using the Nano for a hit or two for the awesome visible vapor clouds, then dumping the rest into my HA to get the awesome even dark extraction.
A couple HA tips, even without using for water I'd get the water tool mouthpiece. The stock one is prone to falling out easily with horizontal force, and it can get really annoying. I'd also highly recommend getting some VaporBros ceramic screens (0.625" I believe). They actually fit almost perfectly in the HA and they provide more pressure to the load which helps for me as I grind.... this gives a better, darker extraction. Yeah the HA uses a combo of conduction/convection and if the bowl isn't packed well enough so that the weed can conduct itself to other weed then the extraction won't be as good (IME).