If you're sure that you want to buy a gravel bike then what you need to do is decide what you need from a gravel bike and then start from there. Fundamentally one of the most important questions is what type of riding do you want to be doing and what type of terrain will you be riding over?
When I was looking for a gravel bike I discovered that the sandy terrain locally and the more demanding single track trails that I wanted to ride on, demanded wide tires. Most so called gravel bikes, only have clearance for narrow 40mm tires and in order to get decent width tires you needed to purchase smaller 650b wheels in order to facilitate that. I wanted a bike with 700c wheels that also had clearance for 50mm wide tires and I've found 47mm to be a perfect size for my needs at the moment, though there are occasions I wish I had space for wider.
Other factors to consider are things like drivetrain choices, a lot of gravel bikes will have a 1x set up with only the one chain ring up front. Personally I love 1x, but on this forum I tend to be in the minority with that view! Frame material may be important to you as well, there are a fair number of Aluminium and Carbon bikes around, though steel is a little less common.
All that said the Grizl is a nice bike, not my kind of bike personally, but they are well built and lovely to ride if your after a faster more road orientated gravel bike. A friend of mine has one and really rates it. I personally have a 2016 Kona Sutra LTD, a more relaxed geometry compared to the Grizl and built for long days in the saddle off-road.