So you definitely recommend a Panini for Reuben sandwiches? What other sandwiches do you use it for?
Oh, HECK YEAH.
And anything you can envision grilling as to what else... Although you still have to pan grill the center slice of a turkey club... But yeah. I am very fond of grilled cheese, with an endless variety (add bacon, turkey, beef, whatever) and every cheese of every kind... and every bread...
BTW, I actually love a Reuben on sourdough, grilled too, and will sometimes sub out turkey pastrami or provalone. Sourdough is probably my favorite bread to grill because it's structure is about perfect for crisping... Almost painful to bite into, it is so crisp.
Roast beef, provalone, and onion and red bell pepper makes a mean grilled sammich. Or pepper jack. Always pepper jack.
And the deli will spur your imagination... My deli has a Southwest turkey and habanero white cheddar that when put together, simply screams desert southwest. A little refried bean and chipolte sauce on a hardy rough bread... it just happens.