I'm not generally a fan of backyard trampolines. They are a nightmare in terms of both safety and liability. In addition, practicing skills at home without a coach is always a gamble, not just because of safety, but also because of technique. Because correct technique is often counterintuitive, there is a high chance that you will end up teaching yourself -- and subsequently practicing -- incorrect technique. And it's harder to fix bad technique than it is to train good technique from scratch.
So my first trampoline recommendation is to not get one.
Having said that, I know that back yard trampoline access is cheaper than at-gym trampoline access, and that telling somebody who loves gymnastics not to do it at home is like telling college kids not to drink beer, so....
Should you decide to get a trampoline anyway, the ones listed in that article look decent as far as I know. Having a net is important (but not foolproof). I recommend very strictly following these rules with your trampoline:
1) Only one person on at a time. No exceptions whatsoever.
2) Don't jump on the trampoline unless there is somebody else around who can keep an eye on you. They don't necessarily need to fully coach you or anything; they can be sitting on the back porch staring at their phone or reading a book, but they should be somewhere they can see and hear you, and call emergency services if you get hurt.
3) Do everything you can to make it hard to see and/or access the trampoline while you're not home. If it's fully-visible and anybody can get to it by hopping a fence, there's a high chance of neighborhood kids sneaking in to jump on it -- and if they get hurt doing so, you can be held liable. I don't know what country you're in, but if it's the USA, anybody who gets hurt on your trampoline -- even if they're doing so without your permission -- will say "lawsuit" before they say "ouch."
4) Keep the area under the trampoline clear. Don't use the area for storage, and don't let people or pets crawl under the trampoline while somebody's jumping.