I have a combo X-tronic station. It is one of the fancier models. The only things "wrong" with it, is low quality plastic in the handpiece. The plastic will undoubtedly (IMO) eventually break from heat exposure. If you use it a lot, I put the over under on 3 years. This is very common in the clone stations. The plastic used in the real Hakko is something that the cheap cloners don't really care to spend on. The real hakko also has a overmold closed cell sovent-resistant foam grip that is super durable and reduces heat escape/transfer and which doesn't wear out and doesn't get slick from sweat or get sticky when you get flux on it.
The construction and internal soldering and grounding of the case were completely fine on my X-trronic unit. I wouldn't worry about it burning my house down anymore than I take care to unplug or switch off from the outlet any heat gun when I'm not using it.
I would note that the heater in the hot air station died after very little use. It lasted maybe a year or two, but I barely used it. It came with a replacement, which i installed. Also, this thing had the worst unboxing smell I've ever experienced from a made-in-China device. The moment I opened the bag, the smell of cancer was overpowering. It was the kind of smell you leave on the front porch for a couple days before you bring it in the house.
I have an 858D that cost $30.00, and I have used it 30x as much as the (retired) Xtronic, and it is still working fine with no maintenance. I've never used a Quick, and I'm sure they're great. 1000W is probably a lot more power than most of these cheap units. But the 858D does everything I need, ATM. For soldering iron I am very particular, and I use a genuine Hakko. But for something you are going to put away when you're not using it, I can imagine a combined unit might be handy.
With any tool/equipment you use frequently, it is hard to go backwards. But for a first station, you could do a lot worse than the X-tronic stuff. Overpriced, maybe. But if you already bought it, use it 'til it breaks. Or until you get a job/situation where you need to use it daily and you want something that will make things easier, for ergonomics or power or reliability, or whatnot. But any hot air station should be switched off when not in use. If the handle gets knocked off the cradle (or the sensor goes out of whack), then you will have a problem.