I have an Inzer belt and would certainly recommend it. Mine is the 10mm Forever Lever belt and it is more than sufficient. Still in top condition after more than a year and a couple meets.
Unfortunately Inzer’s 13mm buckle belt only comes in a two-prong. Their single-prong option is 10 mm. So not exactly what you are looking for but Inzer is still worth a heavy recommendation.
I have been trained by 2 different elite lifters who have competed at the national level for several years. Neither of them are sponsored by Inzer and both heavily recommended Inzer equipment to me when I asked, so I have always used Inzer.
I have a lever as well and find that a pain in the ass; adjusting the size from squat to deadlift. You wouldn’t think it would be that big of a deal but somehow it is. I switched to a wahlanders se