There already was a Rockman.exe thread but whatever...
Don't bother with rumors, I can disprove almost all of them.
Good sources for Rockman.
http://www.exehq.com (Go here, I work here as a staff member)
http://www.rockman-exe.com (REO, Ryouko-sama's site. Best source for anime info.)
I'm playing Rockman.exe 5 DS Twin Leaders at the moment. I beat both halves of the game and I've unlocked Sol Cross Rockman and all the E-Reader + mods, boosting my max HP to 3600 in both files. My party netbattle team is Rockman, Napalmman, and Searchman for Team of Blues (this means I don't get any Party Advances though) while my other team is Rockman, Colonel, and Shadowman, which grants me Blind Rain Rush and Engetsu Sappou. My folder in EXE5 features Cloudman SP and allowing my enemies to cast area steal. Ice Seed is also a key chip as well as Double Point and Color Point. I purposely bugged my Navi Customizer with Humor Sense in order to grant emotion bug, which gives me random Full Synchro, Anger, or Worried at the start of each battle. I sometimes use Forte Cross Rockman but now I use Sol Cross Rockman for the sake of combining Full Synchro with the +20dmg bonus to all chips. My E-Reader+ mods which I have equipped include Dream Virus, Duo, Hikari Saito, Quickman, and Meddy. My most often used souls are Search Soul, Meddy Soul, Magnet Soul, Gyro Soul, Napalm Soul, Shadow Soul, and Knight Soul. My most often used chaos are Blues Chaos, Search Chaos, Napalm Chaos, Toad Chaos, and Number Chaos.
As for EXE4, my most often used souls are Search Soul, Wind Soul, Roll Soul, Guts Soul, Metal Soul, Junk Soul, and Wood Soul. I use no E-Reader+ mods as I don't own any. My two folders are S coded and T coded. One revolves around swords, thunderball, and Sparkman SP while the other uses multihit like Airhockey, Tornado, and Topman SP.
In EXE4.5, my favorite navis to use are Shadowman, Starman, Metalman, Napalmman, Knightman, Iceman, and Elecman. My folder is the same as my T-coded folder in EXE4, seeing as Topman is the easiest navi to S-rank and he's your first mission. Natrually, I'd chose him since his max damage is 2000+
In EXE3, my folder obviously revolves around Flashman, Ice Stage, Elec+30, Area Steal, PlasmaBall3, and Variable Sword's Elemental Sonic Blade attack. My style is Aqua Custom with full leveled up Shield style in my navi customizer.
In EXE2, my folder revolved around Gate Magic and I also used Aqua Custom. Other chips include Ryuiseuigun, Ojizousan, and the Invis series.
In EXE1, I basically used Muramasa Blade, Paladin Sword, Shadowman3, and Dynawave. It's S coded and obviously utilized the stable Area Steal chips as well.