Hi Cat,
I think it depends on your reason for wanting a video doorbell, as in, is it for simply answering the door in your absence, or surveillance of your driveway and surrounding area, whilst you are either out or asleep?
I have installed a few 'Ring' doorbells for family and friends and they have all been happy with the results. Even with the movement sensor turned on, which records video when somebody is in range of the infrared sensor, the battery has lasted for around 3 months, before requiring a recharge. You can get a power supply for them, but for most of the ones I have installed, running cables from the nearest power socket through a porch to the front door, required an amount of drilling through walls and potential damage to plaster and paintwork, so I didn't bother. If you wish to record events, you will need to pay an additional £25 per year subscription, for the App based video recording service.
I hadn't heard about the hacking issue, but doing some brief research, it would seem that the hacks have been more mischievous than sinister, hacking in to the speaker in the doorbell and verbally harassing the occupant. I appreciate this would be upsetting for some, especially if they frighten young children. Ring also make additional security items such as internal cameras, which are generally far more interesting to hackers than the view from your front door, I think it is more these systems, that have caught the news headlines. It would also seem that most of the hacking has been due to users, using the same password across multiple platforms. The key is not to keep using the same password.
There is a useful site called, 'have I been pwned', where by simply entering your email address, it will show which applications you use, have been hacked and your password accessed. Personally my passwords have been obtained from, Dropbox, Linkedin, Adobe etc.
The site can be accessed here:
https://haveibeenpwned.comIt is important to use an exclusive, strong password for a device such as this, then I would say you are pretty safe from hackers.