I know you'll need the C-Com WP to use the datalogger. I've even gotten to the point that I like using the windows version of C-com. If you disconnect (this is just a mouse click, not physically disconnecting) from the FAST ecm before you make changes, and don't use the page up/page down keys to make significant changes it works well for me. The additional datalogging parameters along with the increased time logged are huge pluses. Then being able to tune the screen that you've got overlayed without having to toggle back and forth is real nice. Then throw in multiple tables open at the same time along with a datalog screen. Now you it's a hell of a lot easier to look at the whole picture. I also run WP on XP stripped to the bare bones. Just the minimum needed. No additional crap running in the background.
Then with that little datalogger that you just flip a switch and it's armed. No lap tops going into sleep mode right before a run, or batteries deciding to die, or laptops hitting the dash when you hit the brakes.