Good portable water purifier for backpacking

[hollohas]

I like the sawyer too (and have one) but I don't trust it in the backwoods far from home. I use mine in my day bags and car bags but I choose something more substantial when in the boonies.
The filter on the sawyer is small and I suspect it could clog quickly with dirty water. And IMO the plastic bag is the weak point. I'd hate to have the thing accidentally get punctured when you need it most. The sawyer is an absolutly awesome backup but it will never be my main heavy use filtration solution.