I bought a new Rocket III touring a couple weeks ago and I'm in the market right now for some kind of box or bag that will attach to the stock rack that the bike came with. I know it's small and it's not rated for much weight (although I've read that the rating is overly conservative) but, for now, I'd like to get a box or, preferably, a bag or semi-hard bag. The reason I'm asking for recommendations is that, while looking at various options, it became overwhelming because there are so many.
For now, I just want something that gives me a little more storage. Later on, I would like to get something larger. When I do that, I would really like it if there is a rack that I can change out to without modification so I can pop the original rack/backrest back on when I don't need the luggage. Is there anything like that available? Unfortunately, in my searches, that information isn't to be found.
Our first trips (with my wife) will probably be trips around, say, Lake Michigan or Lake Superior (I live about 35 miles west of Chicago. Later on, I'll probably add a passenger seat bag when I do longer solo trips. (Back in the 60s, I wandered the country for 18 months, never staying in one place for more than one day with one short exception. I did that, believe it or not, with a Triumph Bonneville and only a sissy bar that I strapped everything to. (See attached picture.)
To summarize: I want a small box or (preferably) a bag that attaches to the existing rack without modification. Later on, I'll want a rack that replaces the existing rack without modification, if possible, that I can attach rack and passenger seat bags too. I'll probably be doing solo trips to see my son in Oregon, etc., with that setup.
Anyway, with those requirements in mind, I'd like to hear what other folks here use, like, and recommend.
(EDIT) I'm adding this as I forgot to mention it when I first posted this. I want a luggage system that can easily and quickly be switched out to put the bike back in original configuration. I don't want a box on the bike unless I'm on a trip. I don't want to do modifications or changes to the rack, etc., that would be a PITA to switch back and forth. Ideally, I would like something that only requires removing the factory backrest to install and can be attached to the factory rack, even better, has a built-in backrest for my wife. I've seen soft and semi-soft bags that might work.