[pct-l] stoves and water filters

[Bethany Cooper]

Hi,

I am replacing my MSR Whisperlite stove and would like suggestions  
from past thru-hikers.  I am thinking of going with a screw-on  
canister stove.  Are the standard butane/propane canisters readily  
available in most resupply towns?  Any other thoughts, pros/cons with  
that style?

I use an MSR Sweetwater filter.  For those who have thru-hiked with  
the same filter, what is your experience with filter life, i.e., how  
many filters did you go through over the course of the entire trail?

Thanks!

Bethany