My opinion.
Nautilus BVC coils are on the market since six years ago and still sells like crazy, for a reason.
They have great flavor, spot-on airflow and can last long.
They are my favourite, I buy 4 packets per month on average, as they go in all my dropin tanks an now, in my pod, too.
Their only drawback, is when they overheat, and the wadding become clogged.
The overheating can be taken care with a tank caratherised by a massive base, and excellent coil-base thermal coupling, like a genuine Kabuki, where the coil last forever.
There is a good number of tanks which use the Nautilus BVC coil, the latest is the Nautilus 2s, which improve the Nautilus 2.
The N2 has good flavour and good heat sinking, but is prone to leak during refilling. The N2s has a fill port and doesn't require to be dismantled for refilling.
One of the best engineered Aspire tanks - using the BVC coils, is the Triton mini, of which I have a dozen.
The Triton mini has a e-liquid shutting valve, so you close the liquid flow when you refill, as there is no vacuum lock when you remove the top cap; or in other situations when air pressure decrease suddenly (airplane takeoff or storm approaching), which cause an eliquid leak in all other valve-less tanks.
The heatsinking of the Triton mini is just average, just like the original Nautilus; the N2 is much better for coil longevity, and the Kabuki is outright extraordinary.
You may want invest in a Kabuki (with an extra polycarbonate glass), which give the BVC coils a flavour that is superior, better than anything with dropin coils.
Otherwise, you can go the Innokin route, but you loose on the very wide cross-platform compatibility of the Aspire solution.
I have a number of pods, but I choose the Nautilus AIO simply because I use the same coils of my all other MTL dropin tanks.