I'll tell you my choices for my second save. '*' indicates where I differed from my previous one.
1*. I didn't beg to Fern. Still, Taka's Chatot... I hate that thing (slaughters Fighting-types early game).
2*. I didn't know about the split, but I decided 'oh, let's go and find them all before I fight ZEL and Taka!' The result was not pretty for my Fighting-types.
3*. Magma.
4*. Beat Solaris' Garchomp. My Medicham and his Garchomp were both on red, he attacked me and missed due to the Sand Attacks I set up, HJK finished it off.
5*. I fought Sirius as I'd chosen Heather in my previous save.
6*. I stopped Sigmund. Saphira blasted him through the wall with her Dragonite's Hyper Beam. The hole in the house was very satisfying.
7. Radomus.
8. Said that the Ruby Ring was more important.
9. Kept it. Blake's annoying, and Shelly's feelings aren't as important as whatever Meteor will would do with all the keys.
10*. (where this is the Blue Moon Ice Cream thing) Gave. I spent hours trying to get some, so I figured that I might as well.
11. Fought him because the protagonist owed him.