If you are fortunate enough to own more than one bike at a time, as the OP states he does, you are in a perfect world.
The GSA is the bomb, almost all the bike anyone would every need as a primary or road trip bike... Your second bike option could be a speed bike. Take your pick, EVERY manufacturer has a couple of bikes that fit the bill.
I am fortunate that I picked up a used 07 GSA and for tearing up the backroads and fulfilling the "need for speed" , I have a 1200 HP2 MegaMoto!