Man did you open a can of worms. Everybody has personal favorites. I would recomend buying the one that most of your flying buddies use. This way if you have a problem help is close by. Other than that there are several good radios from the companies you mentioned.

Computer vs. reg 6 channel. Most of the time you don't need the computer. The big plus would be exponetial. On a 3-D type plane EXPO is a must. If that's not what your into buy a good non computer 6 channel and go. Give us a price range and I would gladly suggest a few from each company.

David