Try http://www.lazyrider.com/ or http://bikersfriend.com/. I have a Lazy Rider bag that I have used as a backrest on longer trips. Around town, I have put it behind my sissybar for 2-up riding. Works great either way (very comfortable).

Recently I purchased some used Boss Bags and am seeing how I like them.

 

Yes, I do have the rack. When riding solo it would be better for weight distribution to turn it around and move it forward

 

Forgot about Saddlemen, nice bags...

 

While I don't have a pic with just the luggage, I did find this one of my bike packed for a road trip. The Saddlebags and sissy bar bag are from Tourmaster.
In addition I have loaded on a 7'x7' dome tent (blue), a sling type chair (green), Self inflating sleeping pad (small black roll), a large leather duffle that contains a sleeping bag and two full sized pillows (large black bag for backrest) and a canteen of water. This was an inside Ca. trip but if crossing the desert southwest I also carry a 1 gallon gas can.

 

I got this one for about $135. It slips over the sissy bar and then you can tie it down to secure. I have it facing forward on top of the fender since I don't ride 2 up. I use it to get groceries or pick up small parts and stuff. It works well for what I need it for.

 

And I thought I carried too much. Holy crap bat man

 

Picked up the t-bag set for $50 off of CL. I use it with or without the saddlebags, but you get the picture. The top roll bag I use for daily use.

This was on our trip up the coast.