I'd like to preface this by saying that I'm a gay dude, so naturally I might not be the best fit for this, but I figure I might as well weigh in with what knowledge I have.
My experience skews more towards dildos and the like, and at least there you rather get what you pay for. Cheaper products have cheaper materials, sometimes there are unappealing smells, or icky residue. I have a pair of dildos I've never used because they were so gross. Since then I've paid the premium for the good stuff, and it's been worth it.
In terms of vibrators, I've only ever owned two, a cheaper brand and a Lovense Edge 2. The cheaper brand conked out quite fast, and when I inspected it closely I noticed that the silicone had also torn in places. The Edge 2 on the other hand is solid.
That said, if the reviews are good, I'd be inclined to believe them. With the Lovense products I expect that a chunk of what you're paying for is just the bluetooth connectivity and app features. If you feel the need to hook your toy up with your phone or PC then it might be worth it, but if you're just after a vibrator with no frills attached, I'd give the cheaper ones a consideration.
The Edge 2, and I presume their other vibrators, have a proprietary charging connection. It's essentially just two metal contacts and a cable with a relatively weak magnet attached; it does the job but for the price I think the cable could be nicer. It does mean that the toy itself is entirely waterproof though.
As an aside, pick up some good toy cleaner that's compatible with the material of the toy you get. Lovense has a pretty alright guide on this. The nice thing about silicone dildos is that you can basically just boil them for a deep clean, but I'd this for electronic ones, waterproof or not. Look for something that's antibacterial.
I use the Bad Dragon cleaner, which is excellent. It cleans nicely, the pump produces a foam so it lasts long, and it's anti-bacterial. That said I wouldn't recommend going out of your way to order it on account of it shipping from the U.S. - it gets expensive and there will be something similar more readily available for you. Just look around.
In short, Lovense is a pretty safe bet but you're not going to have 6 times better orgasms. Check the reviews and particularly look out for what people are saying about the material, you want to avoid porous toys because they are much harder to sanitise properly. Since anal will be involved you'll want to take particular care that the toy is cleaned thoroughly, infections are no joke.
Play safe, and have fun.