Never been to archeoskills...but I drive 9 hours to go to the classic...my votes the classic...plenty of primitive skills expertise there,just start talking n asking around on any topic your interested in and folks will point you in the right direction ..and you may even get a more one on one instruction instead of a "class" ....and most everyone there will be willing to share there knowledge with open arms
Besides...most of the primitive skills experts east of the Mississippi river and some of the best in the country will be at the classic IMO.