Like OldEagleEars, I have 3 different style guide rods, just like his line up. STI Spartan, FLGR; STI Lawman 4.0, 2 piece full length; and a Sig Stainless Carry with the short rod.
All function great, got 1500-1700 rds. through the Sig, no kink issues. YMMV.
No real difference on take down or reassembly, just 1911's & don't let parts fly around the room.