No never heard of Smokerhaven. And I recommend buying known popular model numbers with popular
threading, either original manufacturer or well-liked rebrands/clones (well-liked by real poeple, not glowing comments on fake review sites) because there is some poorly made clone stuff, ripoff rebranders, rebranders who sell cartomizers designed for one use only or use
threading that are incompatible with popular stuff. At least one Ego clone and at least one 510 clone are reverse electrical polarity and will fry a normal 510 or Ego battery with its charger.
In the US the most popular slim ecigs are Joye 510 manual (and mega xl manual 280mah) and Kanger KR808D-1 manuals (often bought from trusted rebranders in nicer colors). Both vaped with cartomizers.
For fat battery models, Joye Ego and Ego-T, and the new Eastmall model of Riva 510, Vgo. Kgo , Igo all have fans. But beware random clone things sold as "Ego" (rather than as Joye Ego) - some clones are junky.
Re Smokerhaven - maybe someone in the SG-Vapers section will know something about it.