When buying waterproof jacket you need to consider the
following..
1) waterproofness
2) breatheability
3) lightness..
so far Gore-tex have been able to meet these requirements... that's
why SAF chose this lining as their jacket but SAF's one is 2-ply
gore-tex which is first generation.
the current one is 3 ply with XCR.
Why gore-tex is good is that its waterproofness is PERMANENT.
unlike other which is just a thin lining of nylon or other
aqua-phobic material. which wears out over time (think SAF field
pack or Outdoor/Eastpak bags).
It is breatheable so that when you sweat or perspire, it does not
get retained inside. therefore you do not feel stuffy when wearing
the jacket.
lightness... self-explanatory.
Brands like Timberland are catered more for the consumer market who
sells using "catchy" hi-tech terms...
you should go for outdoor brands and see what "technology" they
implement within the jackets... hint: North Face, Columbia, Mammut,
etc etc..
even of these brands.. i feel North Face and Columbia is quite
commericialised already...