The X core is a bit more square, it's waterproof, it opens from the top front or back, has key slots for both ends, and disconnects, simply as a carry into the hotel piece of luggage luggage. Basically a good luggage piece for rain gear, layers, whatever incidentals you and your passenger might have. For a solo rider, it really gives you plenty of room for all sorts of stuff.
If you're sharing it with the wife, then it's whatever you need for the days Ride. We pack a sizable amount of stuff in the 42 L top case. The trailer has 5 1/2 ft.² worth of luggage space.
It really does make for a great traveling because you really do have enough room for everything. Either choice in saddle will get the job done. Dean Wolfman runs those, I run the X core, but we both have the same 42 L top case.
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