Has anyone done a comparison study between Miox, Steripen and AquaStar Plus? I like the concept of the new AquaStar Plus…a bit more interesting than other filters. I always consider battery weight and availablility, length of time the batteries will last and product efficiency (duh)…I tend to scoop water from source and filter debris using a hemp coffee filter and think I would do that with any of these filters…any studies out there in Lightweightland?