Regarding nicotine salts:
Nude Nicotine has now reduced their price on 100 mg/ml nicotine salt liquid to $80 per liter, the same price as Liquid Nicotine Wholesalers. The advantage to buying from Nude Nicotine is that they offer their unflavored nic salt liquid in 3 different styles: Smooth, Signature and Hit. The only one I've tried is Smooth, and there is virtually no throat hit, a very pleasant vape for those who are looking for less throat hit.
https://www.nudenicotine.com/product/nicotine-salts-smooth-100mg/
Personally, I have no reason to try the Signature or Hit formulations, deliberately made with more throat hit than the Smooth formulation. If I need more throat hit I can increase the PG percentage in my DIY mixes.
The unflavored nicotine salt liquid sold by Liquid Nicotine Wholesalers is likewise excellent. It doesn't have enough throat hit for my tolerant tastes to swear that it has more throat hit than Nude Nicotine's "Smooth".
Nicotine Salts - Nicotine Salt Base | LNW
Then again, I am able to notice that either of these nic salts has less throat hit than my other non-salt nicotine base liquids. It's a very pleasant vape. The caveat is that I have no major objections to any of my other nicotine liquids. The peppery taste that some people notice in some liquid nicotine is not noticeable to me, even if I'm using nic liquid that's been at room temperature for years. I am no supertaster. However, the nic salt liquids are so pleasant that I'm considering a permanent switch.
My philosophy, since I don't crave throat hit, is to use the Smooth nic salt formula from Nude Nicotine, since adding more throat hit is easy, whereas reducing throat hit is difficult or impossible.