I have that cheapo health e-cigarette from dealextreme, and the "healthy e-cigar" from the same shop. I have the e-cigarette for two months, and the e-cigar for one month. I cleaned the cigarette attys only once, by the boiling method. I don't leave them draining overnight. I vape only at work (8 hours a day). The e-cigar was never cleaned. On the e-cigar, I use the cartdriges, as they are good and vape quite nice. On the e-cigarettes, I let go the cartdriges, I prefer to drip directly on the atty because it vapes better. Even though these are very very bad quality products no atty has died on me yet.
I'm about to get my Beci 901's and see how they go.
Oh, sorry about my poor English, I'm from Brazil and my native language is Portuguese