I always get a bunch of one little thing for everyone for Christmas. Last year, it was a bunch of little power banks, and they were a hit. This year, it's going to be a key finder (on anything finder, really). These are cheaper than the Tiles. They've apparently fixed the old bugs of the original ones and now they work as good as the Tiles, or better.
I've been watching to see if these go on sale, and this is a good deal for stocking stuffers.
The Classic has a replaceable battery, which sounds great, but has to be replaced every 6 months, and makes it less water resistant. I don't trust my family to remember replace the batteries that often. It comes with an extra one though. It takes the CR2025 type.
The Plus has a built in battery, which gives it the ability to be water resistant. Unfortunately, this also means you can't replace the battery. It lasts at least a year, at which point they send you a new one (for $12, half off), and you send your old one back to them in the same envelope. Paid shipping both ways.
Not sure whey they're calling the plus, the "Black Friday Deal". They were the same price before this, and they're both 44% off 4 packs.