"There are so many GPS trackers on the market today to choose from. I'm just looking for basic monitoring abilities and decent battery life, and of course I want one that's as small and discrete as possible. Which is the best one for less than $300?"
No need to confess in comments what you use your own tracker for (trust us, we could narrow it down on our own), but do tell if you've found a winner. Bonus points if your module has landed your scandalous SO on a recent episode of Cheaters.