"Drains the battery less" interesting.
From the Bike Trac User Guide
"Your Bike Trac unit has a small internal battery that (if fully charged) will last for up to 30 days, without it being connected to a power supply (i.e. your bike?s battery). This is suitable for short term use and only when the bike is not being used and the unit is ?armed?. If Bike Trac is used in ?Journey Mode? without it being connected to a power supply, the charge in the battery will decrease at an accelerated rate, and will only last for a few days at best.
When connected to your bike?s battery / power supply; with the ignition off, the Bike Trac unit will effectively ?sleep? and wake every 4 hours to send its location details to the central computer server. It does not take a constant draw from your bike battery, unless the internal battery of the Bike Trac unit drops buy 15%; in which case it will draw 3 to 8 milliamps to top up its charge, and then stop. This should not affect the operation or charge of your bike?s battery, providing the battery is in correct working order.
If the charge in the internal battery is low, you will receive an alert by email and/or SMS text message. This is to advise that the Bike Trac battery charge is low and may require charging (please note if your Bike Trac subscription is not valid you will not receive low battery warnings). Should the bikes battery be disconnected this will generate an alert text/email to notify you."
Seems like you'd have to do a pretty neglectful job to cause battery drain.
Bike Trac has Cat 6/7 certification, TRAKking has Cat 6.
I expect they all do much the same or they wouldn't get certified...
