>>1263808Barents pro are just vidda pros with raw leg endings instead of the snaps. It's basically made so you can tailor the leg ending to the length you want.
Vidda pros are what most people get. g-1000 all the way through, double layer on knees and seat, and a bunch of pockets.
Karl don't have the double layers that the barents/vidda do, and it's made with g-1000 silent (they just brush the fabric.) Also different pocket design. They aren't as loud, but they collect a whole bunch of lint and hair and shit (I have a pair of karl shorts I got for like $30)
Karl pro look the same but with a higher waist.
Keb are made of stretchy fabric, reinforced on front of legs and seat with g1000. They also have a bunch of ventilation zippers, and different pocket design.
Keb gaiters are similar but zipoff.
Bergtagen or w.e are made of a different fabric and have some other features. More made for higher altitudes, snow, etc.
Abisko are light weight for hot weather.
Eco-shell have a waterproof membrane.
M is for men, W for women, R is likely regular length but I can't find what you are talking about.
Other little things added to the name will likely be differences in the cut or some additional feature like a lining.
Basically:
Keb family = bunch of ventilation and features for changing conditions.
Sarek family = durability for trekking but more traditional or low-key designs.
Singi = durability for trekking but more 'unique' looking, barents/viddas are in this.
Abisko family = lightweight for warmer weather.
Ovik family = general use, generally durable and heavy.
Varmland family = hunting gear
I went through the same shit. It's pretty confusing. Ended up getting the Keb Gaiter Trousers because I found a good sale and I like ventilation and options in my gear.