I guess it's all a matter of opinion but I certainly don't intend to try turning my Savage into a touring bike.  It's a light cruiser and will stay that way.  However, I like to be able to carry miscellaneous items (tools, flashlight, first aid kit, etc.) and prefer not to have to untie/unpack and carry them every time I park my bike.  Since my preference is not to use the hard side bags on this bike (though I did like them on my KZ750), I am using a medium topcase/trunk.  I tend to think it's more aerodynamic than the side bags but I'm not going to go to the extent of a wind-tunnel test to know for sure.  If I notice drag, it'll come off.  Once I get it done, I'll take a photo and try to find a way to post it.  If you like it, that's nifty.  If not, well that's just peachy too.

I figure that a good old milk crate tied to the luggage rack would be good  

Actually, I took my bags off, only for use on long trips.  In that case, I'll just throw them over the seat.

BTW - after 4 years, the straps on my leather bags were beginning to tear, so I figured that I'd put them into semi-retirement.  Took off the supports too.

Okay, the one I got from eBay is the same as the first JCW link above.  The only difference I can see is I paid $45 instead of $85.  I don't know how to post a pic but I guess I'll figure that out sometime soon.  In any case, I like the results with one exception... I'll be removing it sometime in the near future to primer and paint the adaptor plate I used to mount it.  I basically just used a 1/8" x 6" x 12" aluminum plate as an extension of the standard Savage rack I already had.  It was necessary to remove the pad from the sissy bar to get this trunk to fit but the trunk has a built-in backrest that's larger and higher than the one that had been on the sissy bar in the first place... not that I ever go 2-up on her.  This seems to be quite sturdy.  I'll probably make a smaller pad to fit it there just for looks though.

Let's try this.  Here's a shot of Nadine and her box. http://pg.photos.yahoo.com/ph/nihndja/detail?.dir=739f&.dnm=8b1f.jpg

I just modified the post with a different URL.  Please try that one.

Yes.  It'll easily fit a full face helmet.

They are the removable reusable variety, available from Cycle Graphics at http://www.cyclegraphics.com/.  Just be sure the surface is clean, smooth and free of moisture and they work well.