It certainly doesn't sound like you're overclocking on the voltage then to create a burnt or other off-putting taste. VV had the very best intentions with their NET line, but it had a lot of particulate in it and I wouldn't recommend it as I'm sure the residue would gunk up your clearos. I'm pretty sure it's Latakia that carries a leathery flavor to it. An RYO4 should have a caramel flavor to it. That's why I'm wondering if you'd be better off trying Naturally Extracted Tobacco vs tobacco absolute, which is one more chemical flavor (albeit "tobacco" drop in the perfumer's creation"). I would suggest HHV Legend (cherry pipe tobacco) Serendipity a coffee/cocoa/vanilla tobacco, Huntsman which is an earthy almost cigar like flavor net, and Shadow ( a creamy vanilla which tastes of light almonds when steeped for months) Want2Vape has some amazing cigar flavors and I like Morley for the cigarette experience. Ahlusion has some of the most amazing flavors ever - Wlad is a master flavorist who works with foods and ice creams, but man oh man, is his tobacco aromatic and non aromatic blends ever spot on. My second favourite to Huntsman from HHV is Smooth Criminal from Ahlusion, and I know what you mean about that leather (English type tobacco flavor) and I don't like it either. Go with a few samples or small bottles first and let them steep - sure you can try them straightaway after a shake, but if they don't match up, give them time...