Here is what I have found:
The Osprey Porter series pack (the smaller size) has been my go to pack now for about a year and a half. I can fit about a weeks worth of clothing in it. This is without washing either.
Clothing:
7 synthetic shirts- they pack small and look good:
–3 each Nike polos
–3 each Majestic Athletic t-shirt
–1 each Black Synthetic Polo shirt.
3 ExOfficio Amphib pants – not zip offs,
7 synthetic tight athletic boxers
5 Thorlo light hiker sox
2 Thorlo heavy hiker sox (for the plane)
1 New Balance track shoes
1 SUL wind/rain jacket
1 set of patagonia medium weight long underwhere.
1 light wool sweater
1 Boonie Hat
1 Wool Beanie or Synthetic thick Beanie
1 Pair of work gloves
1 pair of wool gloves
1 Keen sandals
2 Nike light running shorts (soccer/football) for bed, workouts, and off hours hikes.
***I carry a boarding bag (man purse) with all the little stuff. Though I can't find a bag I truely love. The Osprey was cooler looking but the REI version, though ugly works better. I think I am going to dye the dang thing black and keep it.
The struggle has been with the fact I keep ending up in Iceland and Northern Canada (freezing) on crew rests and fueling stops with 12-24 hours off or sitting on a cold tarmac freezing my tail off in the cargo hold monitoring equipment.
Also, we have ended up working in extreme environments, especially the cold. That is the next kit to get overhauled. As it looks like a fun December and January. I still thing the MEI Travel Packs may be the way to go and I may kick down soon for one of those. the Osprey was purchased instead because of a glorious error by an REI staff member and I got the pack for less than $60. It has been good. And I do love that 3 sides are semi rigid. It has made it easier to protect the French wine purchased in Paris, the Rum in French Guyanna, and the Vodka in Moscow I bring home to share with my wife. All of the other items I have purchaed for the kids have survived to. The rocket models, carvings, and russian dolls have all survived.
I can't say the same for a few other packs and bags I have tried. All of the North Face, High Sierra, and REI packs and bags heve been either returned to REI or sold on e-bay/craigslist.
Thanks to all of you. I have researched your suggestions and still have at least 2 strong years of travel ahead. I have spent nearly 4 months on the road this year. The same last year. I will keep checking back.
THANK YOU ALL!!!