I had a FiftyOne for about 24 hours. If I remember right, what they consider "Medium" is pretty weak. That could vary from vendor to vendor though. Mall kiosk people are liable to say just about anything to make a sale. Last week I had one trying to tell me I needed to upgrade to the Fifty-One from what I had in my hand and was
vaping when I passed his kiosk. Um, OK, I had a ProVari in my hand. lol
If you look on the cartridge, it should have a number on it - that will tell us what nic strength you actually have. For
throat hit, you need higher nic levels. I barely notice any hit from 12mg, some from 18mg, and pretty decent from 24mg.