Bests & Worsts Reviews from Amazon

See update 2/10/15. I've Done My Homework. Few have explained why they think it is so good or why it isn't. The idea is great and I have one, but I also have the Sawyer Mini Filter, from Amazon, for the same price. It is half the length, same 2oz weight, but also requires a supplied syringe to back flush. It filters more contaminates (safer) and filters 100,000 gallons vs 264 gallons for LifeStraw. Filtration is .1 microns vs .2 microns LifeStraw and protozoan parasites (>LOG 6 reduction) -vs- (>LOG 3 reduction) protozoan parasites. COMPARISONS BELOW: -LifeStraw- *Removes minimum 99.9999% of waterborne bacteria (>LOG 6 reduction) and surpasses EPA standards for water filters *Removes minimum 99.9% of waterborne protozoan parasites (>LOG 3 reduction) and filters to an amazing 0.2 microns *Filters up to 1000 liters (or 264 gallons) of contaminated water. -Sawyer Mini Filter- *High performance filter fits in the palm of your hand, weighs 2 ounces and filters up to 100,000 gallons (30 times more than comparable filters) *Attaches to included drinking pouch, standard disposable water bottles, hydration packs, or use the straw to drink directly from your water source *Removes 7 log (99.99999%) of all bacteria and 6 log (99.9999%) of all protozoa *Sawyer's certified 0.1 micron absolute filter removes bacteria and protozoa at a higher rate than accepted EPA guidelines UPDATE: 2/10/15 When I purchased the Sawyer filters on 10/31/2013, Amazon was selling a pair of these for $21.35. Yes, I said two for $21.35! This, I thought was a great deal. So with all of the negative comments of my review, I would still recommend a pair of these for that price. As I said in the title.... you can buy better for the same price. The Life Straw was at $19.95 at the time. If there were any doubt of a Sawyer filter after extended use, I would just pitch it. Now they are $40.42 for a pair. I would have a different opinion, at that price. Typical, of Amazon's swing pricing.