As others have mentioned, higher PG can give a harsher hit. Higher VG can mellow this out and will produce more vapor/clouds. But menthol flavourings can also be perceived as being harsh. I enjoy menthol every once in a while, but the flavour percentage has to be low, VERY low, otherwise I cannot vape it. Unfortunately with commercial juice we do not know the flavour percentages so keep an open mind in trying different flavours.
If willing to pay the price of admission, then I would encourage trying an MTL atomizer. But understand this is not a guarantee. I started with MTL and found it irritating as hell and quickly adopted a DTL style. We are all different therefore have different values, needs and practices. Based on the individual, sometimes we do not need to mimic smoking to a T, but to achieve a satisfaction that is great enough to allow us to kick the nasty habit.
That said, both MTL and DTL can benefit from power control and the V8 Pen does not provide this. Judging by the measurements found online, if we took the Innokin Z PLEX3D coil, which is 0.48 ohms and recommended to be used between 13 and 16 watts, I suspect the V8 would output between 30 and 35 watts. And this is just one example.
If willing to take the plunge into experimenting with different coils/atomizers, be it MTL or DTL, it would be to your benefit to replace the V8 with something that allows adjustability. But before you start throwing money at hardware, I would start by changing your juice – perhaps even a different flavour. Just keep an open mind and understand there is no one size fits all!