My "favourite" corp is EVO, metafriendly, (relatively) openminded, with an ork as CEO and a free spirit into the board of directors, it also has many ecofriendly buisness at hand, produces some of the best augmentations on the market, are strong in nanotechnology, food related buisness (because runners have to eat too, and is good to not line Azzie's wallet for a change), have CrashCart (and hopefully they keep it insect free after the 2XS dreckfest) and have an agreedment with some red welsh dragon (greater variety) for a music related blog.
The second goes to Ares, yes they are bastards that make moneys by causing untold bloodletting in Africa, but they helped to kick Saito's butt (at least what I think was his butt, it could have been his face but it's hard to tell which was one and which the other) and helped Masaru in the Filippines (even if just by accident, because we all know that they didn't mean to sink Mitsuhama's warships when they stumbled in that Ares/Yamatetsu joint naval battle simulation held for training porpouses, don't we?), they are the ones that are called in when mystical insect dreck hits the fan, have space stations (places where the can access metaplanes without endangering Earth) and lets face it from the Predator to the Banshee Ares means toys and so it's close to any shadowrunner's heart (because we all love our Predator

).
At the tird place there's NeoNET (which is not New NETwork, no, it's New NovatechErikaTransis-neuronet); they have for CEO the bastard that made Fuchi an AAA corp just destroy it when his buisness mates decided to get rid of him, and did so backstabbing his greatest rival at the same time (he managed to fragg over not one but TWO triple A corps at the same time), they revulutioned the Matrix (in a much more radical way they ever planned to do) and have a fragging Great Dragon as head of R&D (one of the most diplomatic as well). From a runner point of view they offer top notch cibernetics, matrixware and software; what takes the second place away from them is the experiments on the technomancers.
Horizon is the 4th, they do some great things but their buisness is an hypocrital one by definition; also there's something creepy about their goodness (if anything in the 6th world has been shown us clearly is that goodness has a most likely a second porpouse) yet they have a good impact at social level, they are big in transhumanism and produce biological food (we can't stand soy anymore), what realy irkes me is that I can't go from my bed to the bathroom to piss without having reminded how great they are, Hey chummers world existed even before them, and so life.
Than comes Geatronics, not a triple A but they are ecofriendly and keep Shiwase's filthy nuclear plants out of Seattle, not bad for a second tier corp.
Wuxing also stikes me favorably, I don't know maybe it's their mystical feel, maybe it's the Big D's involvment or that they are a giant middle finger pointed toward the japanacorps; anyway they are confortably in the good side of neutrality. By the way:
QUOTE (Sir_Psycho @ Mar 9 2009, 09:25 AM)

Wuxing deserve respect, because they mustered the asia-pacific region into competition with imperial Japan. It's like they're still sore over the rape of Nan-king.
who wouldn't be pissed off? And think how they felt when Japan proclamed the Yamato Spirit Act.
on the negative side of the spectrum there are SK (Lofwyr and pollution), the japanacorps with Shiwase the least drecky, followed by Renraku, Mitsuhama (that with the dreck that its Zero Zones did in the Filippines is placed high in the drecklist) and Yakashima (which contendes the title of Wrost of the Wrost with the evertwisted Aztchnology).