If by base locking, you mean needing to get out the vape tweezers to remove from a mod, than I can confirm the X has issues with that.I've not tried the nautilus X, but like the Nautilus mini. However, they aren't that straightforward and can lead to further frustrations, especially flooding and the base locking (I don't know if the X is the same, though). Personally, I'd recommend the Aspire K3 with 1.8 coils. That should give you a nice safe base camp, and easy going vape, from where you can safely explore other tanks.
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