I'd love to hear some opinions from those that have used either one. I'm a bit torn as they both serve the same purpose in different ways and both have strength and weaknesses. As far as I can tell, here is what I am thinking. Trackimo Pros - cheaper - connects to cell towers for tracking making it more versatile in coverage area - would be more versatile to use on other things than just my drone (luggage, kids, etc) - good battery life Cons: - Requires cell (may be tricky in remote locations) - Requires a charged and working mobile device with cell service as well - monthly service fee Marco Polo pros: - independent system. No cell needed - enclosed system no cell phone needed Cons: - not as versatile (for example: your not going to know where you luggage ended up on, or if your "whatever" it is goes more than 2 miles away from you) Thoughts? I guess the best answer would be both ... But I'm not quite keen on dropping 350.00 total on trackers right now. Thanks!