Been using the same head for probably a month. Haven't cleaned it or done anything more than refill the
tank. I just toss 'em when they're done, but might save them since I saw someone suggest that they might sell in the classies. Occasionally I do get a burnt taste, but I tilt it and wet it and it goes away for many more great tasting vapes.
I'd second or third or whatever the count is, that on an eGo battery, stick to the 1.8 ohms. 2.4 would be my recommendation on a higher end VV
device with the power to push it.