Hello John and thanks for your post
The two sticks (standard k305 and k4505 pro stick) are the main ones on offer at the moment, on the website they simply state USB Modem Stick and USB modem Stick pro,
The core difference is that the pro is capable of higher speeds subject to signal and data reception in the area, in terms of international travel, this translates to the maximum data signal output in any given area.
If you want to take advantage of higher speeds then a Pro stick is the way to go, however in areas of relatively standard or low signal you will not experience any major difference between the two.
Functionally both modems are identical, so ultimately your decision should be based on cost and the data package you intend to use.
Thanks
Reidar
eForum Team