If you can buy a new ZI, AND you have a competent service in the Philippines, then it is better, but I can tell you by experience, that when it comes to alignment, there are basically two good solutions: the factory or DIY. The RF of the Ikon is so precise, that lots of people mistake the non alignment at "infinity" for a problem - in fact if you want to check it, shoot it at 1 meter and see the result - if it is ok, then there is no issue at any distance.
The Ikon is a bit more delicate than Leicas for getting out of alignment, but I feel the difference boils down to how many bumps it will take to make it happen, so Leica or Ikon, it does not matter. As a general recommendation, I would say, a Luigi case with grip makes wonders to protect the camera from the bumps, further dampen the shutter sound, make for a better handling and also by stabilizing the play of the lug rings, protecting them from wearing out. If you do not wear glasses and are happy with slow shooting (no AE) an M6 is also a valid camera, although much more cumbersome to load.