I just came back from a 10 month tour through Europe/Middle East/Asia. I have Touratech's and a frame from Overland-Solutions. The frame is top notch, the bags are shit. I picked both, so I can't complain. The TT bags are riveted, not welded. See pics on my website for some damage.

I am tossing them and getting custom ones made. I thought a lot about the specs, and here is what I am going with:

- 4 loops on top of lids, same as Zega cases, in similar positions
- Lift-off lids with 1 centimeter overhang
- Weather stripping on inside of lids for waterproofing
- 4 small loops on narrow sides of cases, 8 loops in total per case (strap holders, fuel bottle attachment option)
- Protex locks
- Flush-mounted support plates for locks, most importantly for attachments to frame. (8 locks in total, same key, 2 locks to hold bag to frame)
- Minimize protrusions on inside of bags to prevent wear of articles bouncing up and down while riding
- 35 L left and 41 L right - BMW R80G/S
- Outside lower rim of bags at 45 degree angle (2 cm width), not straight welded
- Weld all joins, not tack welded or rivited
- All welds polished to look smooth
- Annodize all pieces
- 2 mm or thicker material? Best aluminium...

http://tinyurl.com/3xh7sp

Tesch
 

http://www.berndtesch.de/English/Boxes.html

These are the best looking ones I have seen upto now. The racks are immense and the boxes too.

lots of options available too. I will be gettting some for my XT600E pretty soon.