Is that Penguin thing an MTL? That might be a good choice to try given it's a AIO?....and I've seen lots of people succeed. The point is soup to find what works for you. Give what you're doing a shot, if you like it cool beans. If you're finding it's not satisfying enough or you find you're having to hit it too much, look at a mouth to lung (MTL) tank. Keeping in mind that you would need to up the strength of your nicotine.