I have the big rack on my '06 and I have used the Nelson Rigg CL150, and currently have a Tour Master Deluxe bag. They both fit the rack well even with the rain cover on.
The NR had one large main compartment which expanded, but was a bit of a pain to attach unless you packed the expanded pack first. (The attachment points on the bag are ABOVE the expansion joint, so it wants to compress when you attach it to the bike.) If not expanded, it was easy to pack and attach. The side pockets expanded too. Good rain cover.
I like the TM because it has a large main compartment, is a little less ridged, and has 2 side compartments that can be unzipped inside to make the main even bigger. Good rain cover. It can be compressed and placed in a side bag if you want. Easier to carry by the grip-- more like a duffel off the bike. I think you can pack a little more in this bag, especially bigger items.
Both had keeper pockets in the "lids". They both could be attached to the rear seat of the '06 via bungies on the bags (the TM has little compartments to place the bungies when not in use, so they don't hang and snag), leaving the rack for more items.
The bungie hooks on both bags easily attach to the rack. I'd recommend either one.
B)
