02 orbit or Argon which is better?

[devoncatt]

Any experences with the O2 orbit or wait for the new O2 Argon.
Would you buy it again?
I am trying to replace my 02 XDA Mini-s.
Good or bad GPS?
Hard to change mini SD ccard?
Can you change the mini sd with gps software to larger size?
Problems or accolades from users?
What do you hate like about it?
Problems with needing special headphones not 2.5/3.5 jack?
Using it in the car as GPS/Phone Good or bad?

devoncatt