I still haven't taken the decision to order any of these magsafe alternatives yet, because by reading the Amazon reviews, all these cables have horror stories of damage to the usbc port in the Mac, or to the Apple power adapter (yes, very few cases, but even if it's one case, it's worrying, because 2018 MBPs are not cheap).
One thing that seems to be common to all these cables is that they come from small businesses, freelance-like projects through fundraising, or unknown brands that don't even have a website (with perhaps the only exception of Griffin, but it has horrible reviews regarding the too weak magnet and that the connector doesn't match in a clean/clear/confident way).
I'd really wish that some big and serious brand with good reputation at making Mac accessories, made a MagSafe alternative. We are talking about an accessory related to power charging, which is potentially dangerous by nature, both to the Mac, and even to persons. I'd really wish to buy a MagSafe alternative backed by a reputable brand in a serious way.
[doublepost=1538823421][/doublepost]BTW, one more thing: Why are they making these MagSafe alternatives so tiny? Yes, USB-C is tiny, but the magnetic breaker should have the same size as the original MagSafe if you want it to be good and adequate. By trying to make it as tiny as the USB-C, it's obvious the two parts will not match as cleanly as the original, and it will be more prone to fail and have a shorter life. Make it bigger please!! (at least the same size as the original). And make it match in a clean way, with a clear "clack" sound and no possibility of skewed connection.