its about TIME for the LR. I vape 2.0 ohm on my reogrand because it's true 3.7v vaping as opposed to 3.4-3.2v vaping on the tornado batteries. I'm still on my first attie and havent fired up the 2nd atty yet...i'm really enjoying them and i've easily hit over 100 refills on the 1 atty. No burnt taste for me. 1.8 ohm will be nice and little bit hotter which I enjoy. 
Also, i put my atties in vinegar for a few hours to clean them. I havent heard anyone mention that...I've been doing that for about 2 years now....anyone disagree? I put them in a shot class, vinegar and water, let them sit for a few hours, i take them out, wash them really well (pressure wash with a syringe and drip tip, custom made) and then i let them dry. IT's been ok for me and i have no leftover vinegar taste....is the vinegar helping you think? I figure we use vinegar in coffee pots to remove nasty residue, I thought it would help on the atties...I haven't had one fail on me yet in 2 years. I'm using LR 2.0 ohm, and LR 1.5 ohm and they seem to be clean after I do the vinegar soak and let them dry.