I decided to get the road gear euro-sport jumbo hauler.  I will be using to go to Indy in Sept, but will try it out before then and post up a review. 

I have run with a Nelson-Rigg mini sport (classic) tail bag for about two years. It comes with a rain cover that keeps everything dry so far. It is a smallish bag, holds a sandwich, thing of yogurt (lunch) hand full of misc. stuff, small folding pruning saw, clippers and a rain suit if I roll it real tight and put a strap around it so it won't expand. Sits about nine inches tall and fits the stock seat real nice. (fold the flaps under the bag). Sometimes I think looks to tall but it's real handy. I hardly ever take it off. Sorry no pics. The pictures on the nelson-rigg sit has it on a 600rr. Check it out, it's served me well

Ok, so I got my cortech sport tail bag and have been running with it for a few days. First off, it was really easy to install, just bungied it to the bike and it seems very solid. I've had it up to 90 mph and so far it has stayed put.

I like the way it looks, it is not too big for the bike, but provides enough storage for my needs. The other night to work I was able to put my 15.4 inch dell laptop, sweatshirt, keys, wallet, checkbook, hat, raincover, and a t-shirt inside, and still had some room ( this was with the sides expanded)  Which brings me to the expandable feature. very nice to have. It's simple to unzip and gives you about 3 more inches of space on both sides of the pack.

Overall, I'm very happy with the bag and I would recommend it to anyone thinking about it.  Only con is that I wish It held it's shape a little better when empty.  Not a big deal though. 

Here are some pics

I've been researching for what to buy myself for an upcoming trip.  Narrowing it down to the Nelson-Rigg or the Cortech.  Looks nice on your Dark... hmmm...  I'll post up what I buy...

Bought the Cortech Sport from NewEnough yesterday, supposed to get it on Friday, so I'll post the good/bad/indifferent soon...

Found a new DP tailbag/trunk on ebay last week.
It came in today.
Looks like just what I need, and doesn't take up the biposto, so the wife won't pregnant dog.
I'll post pics when I install.
Jeff

Received the Cortech in the mail today.  So far it looks like a nice piece of luggage.  Bit concerned about how much it will hold (smaller than anticipated).  I have a 4 day trip hopefully coming up next weekend and I'm afraid I'll have to strap on an extra bag (a backpack or my Chrome messenger bag).  We'll see, have the week to test out the bag.  Will take pics once it's installed and post up here...

Too big for everyday use, but it'll come in handy for trips, and grocery day.
Not bad for $80.