VPS hosting is like you are living in an apartment complex. It means that other people are living in the same building, but you have your own secure apartment. You will get more room and restrictions will be fewer as compared to living in a dorm. It also means that if your neighbour is misbehaving, it is the problem of owner of building, not yours.
Shared hosting is cheap and allows you to install any gallery platform you wish if a hosting plan meets its requirements. But be careful and study your hosting provider’s Acceptable Use Policy thoroughly. The truth is, that even if they claim unlimited storage with their plans, they don’t want you to use much of it. On the contrary, they secretly hope that you will use less and they can host many other clients on the same server. For that reason, hosting providers usually put limitations on their policies (e.g. “no more than 10 GB for images,” etc.). So don’t be convinced that you have unlimited storage without first checking your shared hosting provider's policies or you will find your account suspended someday.
Every plan has some appealing configuration options. In particular, along with support for the usual Linux variants – CentOS, Ubuntu, Fedora, Debian – you can choose Windows Server 2008, 2012 or 2016 for only a $5 a month premium. That's very good value, and if you're more familiar with Windows than Linux, it could save you from lots of management hassles later on.
A great advantage of VPS, compared to both shared and dedicated solutions is snapshot technology support. A snapshot is a state of a system at a certain point in time. It works like game saves in your favorite computer game. If a game is not going well, you can exit and start from a checkpoint. A snapshot works the same way; if you need to go back in time, your system can be restored from a snapshot to its previous state. It is extremely useful in case of a system failure or simply if you run complex tests and wish to save your progress. Unlike a backup option that copies the whole system each time you run it, a snapshot contains only changes. This means that a snapshot takes less space than a backup and can be created/restored quicker. It does not mean that you do not need backups though. Backups are still life-savers in case of operating system failure. Don’t forget to store them externally.