Inzer does make a good belt. I own two of them - one traditional and one with a lever that I use mainly on squat days. But let me throw a little monkey wrench in the works for you. Most strongman competitors I know use a Rehband belt. There are two models, one with a built in semi-hard belt (called the Strongman Pro), and the the other without. I have been using the former for about 6 months and like it a lot. When things started to get really heavy I used to put my hard belt over the top of my plain Rehband, and this avoids having to do that. But just having the plain one does offer the versatility of not having the hard belt always there.
I would link you to the site I buy this stuff exclusively from - Jackal's Gym - but their site is down right now. The company is owned by the Gillingham brothers, some of the most honorable and respectful people I know. Karl, is a pro strongman at the international level, Brad is a top 5 PLer and Wade is a grip competitor. They would be happy to answer any questions you have. Really good folks.
But the choice is yours. You can't go wrong with a plain hard leather belt or with a Rehband. Both have their strengths and weaknesses. I will tell you though, my Rehband gets a lot more use than my hard belts, and that seems to be what happens when people start to use them.
B-