I stretched the spring, so my battery wouldn't rattle for the Vamo. I prefer it over the eVic too. There's something about easy menu, solid vaping, and being able to go from an 18650 to an 18350 easily that makes my Vamo my daily. Now yes, you can get a Vamo for under $50, but you also need batteries and a charger which isn't too expensive either. But once you have the batteries and charger, it does open the door for other APVs.